Tuesday, November 26, 2013

Local SEO In Nepal | "SEO 101: The 23-Point SEO Checklist"

If you’re just getting the hang of all the things that go into an optimized website, there’s no doubt the list can be overwhelming. In Bruce Clay, Inc.’s SEO Training course, we offer students an SEO checklist as one of the many take-home materials. Here, we’d like give you an excerpt of that list to help you on your way. While not exhaustive, many people find a list like this to be a great reminder of the many “to-do” items during their SEO projects.


On Page Optimization
1. Head Section Order
Best practices is to ensure your Web pages’ Meta tags are in the right order: Title > Description > Keywords. Remember, the information you put in these tags is used to render the title and description in the search engine results pages, and is what searchers see.

2. Title Tag
Methodology states Title tags should be approx. nine words, plus or minus three. You want to make sure the most important information, including top keywords, show up before the cutoff in the SERP in Google at approximately 70 characters including spaces.

3. Description Tag
The description tag should also be mindful to include the most important info and keywords before the SERP cutoff at approximately 160 characters in Google.

Side note: Don’t forget to make the title and description compelling – this assists in conversions. You don’t want to waste your prime real estate in the SERP with boring copy. For more on your Head section, check out this SEO Newsletter article that discusses the ins and outs of Meta data.

4. Keywords Tag
Even though Google has stated the Keywords tag is not a consideration in ranking, we always include it as a best practice. We list keywords in order from longest in length to shortest in length, separated by commas.

5. Heading Tags
In the body of your content, make sure your first Heading tag always begins as an <h1>. Subsequent heading tags should be <h2>, <h3>, <h4> etc., and be used as the page’s table of contents. For example, <h2> is a subhead of <h1>.

6. Overall Word Count
The amount of words you have on a Web page will vary by topic, keyword and intent. But, in general, less than 250 words is rarely recommended – especially if you’re trying to optimize for keywords. Informational Web pages will almost always warrant at least 450 words. And quality content is key.

7. Alt Attributes with Keywords
The American with Disabilities Act says you should always describe the image on the page for the vision impaired. Ensure your images have proper descriptions associated with them, and if appropriate, keywords for the page. Alt attributes are also required to validate your HTML code.

8. Dashes vs. Underscores in URLs
Underscores are alpha characters and do not separate words. Dashes are word separators, but should not appear too many times or it could look spammy. For more on this topic, check out this post by Google’s Matt Cutts.

9. Fully Qualified Links
if you make your links fully qualified, there’s no question by search engine spiders, browsers, etc. as to where the file is located and what it’s about. If your link looks something like “../../pagename” (a relative link), then it may result in crawl issues for some search engines. Rather than complex URLs, use fully qualified links (http://www.URL). And the site map should always have fully qualified URLs.

10. Make JavaScript/CSS External
you want to be sure the most important code is the first thing the search engine bots crawl. You can externalize the code that gets in the way of this to ensure there aren’t unnecessary lines above the body text.


Sitewide Optimization

11. Site Map
Your site should have an HTML site map, and every page should link to that site map, probably in the footer. You should also have an XML Sitemap you submit to search engines.

12. Text Navigation
Verify there is text navigation, not JavaScript or Flash navigation that spider’s can’t see. Make sure you at least have text navigation on the bottom of the page if there aren’t any spiderable navigation links in the top nav.

13. Make Robots.txt File
It’s important this file exists, even if it’s empty. The Robots.txt file tells the search engine spiders what not to index. Also make sure the file doesn’t accidentally exclude important files, directories or the entire site (this has been known to happen!).

14. Keyword Strategy
The keyword strategy is an ongoing process that essentially never ends. It starts with extensive research and iterates with extensive research. One could write novels about this topic; just know it’s part of any solid SEO checklist.

15. Web Analytics
There’s much you could say about Web analytics in your SEO strategy. The important thing is to make sure you have it. Ensure your analytics are properly set up and monitor them regularly to find out of if the keywords that are generating traffic are in your keyword list, and that your site is optimized for them.

16. Linking Strategy
This section warrants way more than just a few sentences, but it should be noted as part of the SEO checklist. Your internal linking structure typically stems from your siloing strategy. Your inbound/outbound links should be part of an organic, natural strategy in compliance with search engine guidelines, and be monitored regularly.

17. Server Configuration
Regularly check your server, looking for 404 errors, 301 redirects and other errors.

18. Privacy Statement
Some reports say a “privacy statement” on your site is an important element in bing. It’s best practices to include one anyway; this is so you can let site visitors know what you’re doing with any data you collect about them.

19. Static Pages
Complex, dynamic URLs could be a problem. If your URLs have more than two query string parameters and/or dynamic pages aren’t getting indexed and/or you have a lot of duplicate content, consider converting them to static pages. You can also use mod_rewrite or ISAPI_rewrite, as appropriate, to simplify URLs. Rewritten URLs will appear to be static pages. This tends to be a lot of work, but is a surefire way to address this issue; you can also use the Canonical tag.

20. Static Index Pages
If you have a home page with content that constantly changes, it can result in diluting the theme of your site and cause poor rankings for key terms. Try to maintain chunks of constant text on the home page.

21. Use Text over Images
Any time you can use text for something instead of image files, this helps the spiders understand what the page is about. This is because search engine spiders can’t “see” all the text on an image file.

22. Ensure No SPAM Tactics
Make sure your SEO strategy is following Google Webmaster Guidelines. If ever in doubt about any of your tactics, refer to what Google accepts for SEO.

23. Check for Duplicate Content
Do a search to see if your content exists elsewhere on the Web. You may want to check out CopyScape.com and use it regularly.

Monday, July 1, 2013

Local SEO In Nepal | "The Top 12 Free Local Search Directories"

Local SEO In Nepal
Local SEO In Nepal
Local SEO is not only budget-friendly for a small business, but it offers the opportunity to connect with the most relevant customers. It is possible to achieve great local search rankings without a large SEO outlay. Whether you hire an SEO company or do it yourself, you must invest the time. Local business listings, when optimized, can quickly achieve first page exposure and will produce a superior ROI to traditional advertising.

While Google is still the dominant player in local search – and has been since the inception of Google Maps – the landscape has altered somewhat since the addition of Yahoo! and Bing, as well as many new local options like FourSquare, Yelp, Merchant Circle and Urban Spoon.
And Yet, Local SEO Still All Harkens Back to Google

Having an accurate and consistent representation of your business’ name, address and phone number is paramount. The importance of what Local SEO’s call “NAP consistency” (Name, Address, Phone Number) cannot be overstated. While these directories can generate traffic to your site, they also serve as references or “citations” for your Google+ Local listing. If Google sees that you are listed differently (i.e. different address or phone number) across these top local directories and others, it decreases the relevancy of your business in Google’s eyes and they will not prominently list you in the search results.

Here are the top 12 local search directories (outside of Google, more on that to come) to submit your business to:

  1. Yahoo Local
    http://local.yahoo.com/
  2. Bing Local
    http://www.bing.com/local/
  3. Yelp
    http://www.yelp.com/
  4. Localeze
    http://webapp.localeze.com/directory/get-started.aspx
  5. InfoUSA
    http://leads.infousa.com/Landing/UpdateListing.aspx
  6. Yellow Pages
    http://www.yellowpages.com/
  7. City Search
    http://www.citysearch.com
  8. Super Pages
    http://www.superpages.com
  9. Manta
    http://www.manta.com
  10. Insider Pages
    http://www.insiderpages.com
  11. Merchant Circle
    http://www.merchantcircle.com
  12. Best of the Web, Free Version
    http://local.botw.org/helpcenter/jumpstartproduct.aspx
Source : flagstonesearchmarketing dot com

Monday, October 15, 2012

SEO in Ten Easy Steps | "Click for webs"

By              : Press Release
Category   : SEO in Ten Easy Steps , Click for webs
Source       : https://gator486.hostgator.com

How to make Google (and your visitors) love your site

If you are at all serious about succeeding online we highly recommend reading this guide.
Based on Google's Webmaster Guidelines, these ten fundamentals of Search Engine Optimization really do work.
And... they are easily within reach of most website owners with little or no technical skill.
Let's get started!

1. XML Sitemap Submission

Technical Skill Requirement: None
Difficulty: Easy
Submitting an XML Sitemap, also know as a Google Sitemap, is the best way of being sure search engines have information about your entire website.
XML Sitemaps have replaced the older technique of "submitting to search engines" by filling out a form on each search engine's submission page. They are are the best, fastest and only guaranteed method of informing search engines about every page of your site.
Your "Get In Google" tool automates Sitemap creation and submission to each search engine. Updating and resubmitting your sitemap on a weekly basis will increase its effectiveness even more.

2. Building Links

Technical Skill Requirement: None
Difficulty: Ranges from Easy to Difficult
One of the most important elements (of the more than 200) that Google considers when ranking your site is the number and quality of links pointing to it. The general idea is that the more sites indicating that your content is valuable by linking to it, the better. As long as these links come from sites deemed to be of quality or authority (high search rank), the better your own search rank will be.
Be very careful about buying links! You can be penalized for participating in most link buying schemes, or having links from sites that Google has blocked, such as sites involved in link selling, sites with malware, or any other activity in violation of Google's guidelines.
A common legitimate link building activity is directory submission. Submission can range from just your name and homepage URL to an extensive business profile. Always make sure any content you post to directories is unique, readable and human friendly. Never submit strings of comma-separated keywords or duplicate content that will be seen as spam.
It is always best to list your site only in the most important, authoritative and reputable directories. Avoid the "list your site in thousands of directories" offers. Most are a waste of time. Not all directories are equal, and many of the directories that some online services offer to post your site to are completely useless, or could even be on Google's black list.
There are many other ways to quickly develop high quality links that work, including: professionally syndicated press releases, syndicated business listing services, submitting articles to or commenting on blogs and forums, starting your own blog, getting local government (.gov), educational (.edu), or business association links by working with those organizations, submitting product reviews and answers on sites like Yahoo! Answers and writing submissions in related forums and user groups.
Another important link building activities is participating in Social Networking activates such as Facebook, LinkedIn and Twitter.
However, by far the best way to get quality links to your site is by writing good content. If it's original, informative and interesting people will want to link to. If you haven't got the skill or time necessary to write great keyword focused content and work to get it posted on important sites, check out our Top Listing Program. It's an effective, low-cost alternative to trying to do it all yourself.

3. Learn a Little Simple Basic HTML

Technical Skill Requirement: Low
Difficulty: Low
HTML is a language used by web browsers to dynamically format web pages. Many important SEO techniques require only very simple edits to your site's HTML code. Knowing what to change and how to adjust your HTML code has a huge effect on your SEO and search listings. Don't worry; learning the basics of simple HTML is not difficult. (However, if you are using a web designer or outside web developer to implement these simple changes to your site, keep in mind that they are just that: simple. They should not take too long to complete once you know how to tell them exactly what to do.)
W3School's free tutorials are all you need: ( http://www.w3schools.com/html/default.asp )

4. Choose the Right Keywords or Key-Phrases to Target

Technical Skill Requirement: None
Difficulty: Easy
Choose two or three highly targeted keywords or key phrases for each page of your site, including your Home Page. (In the next step you will learn how to produce the content of your site based on them)
Choose very carefully because keywords you think might be perfect may not be what people actually search for. For example, never use general keywords such as "travel" or "vacation." Very large, well-known sites usually rank the highest for general words such as these, and are extremely difficult, if not impossible, to out-rank in search listings for these words. You will enjoy much better results by targeting less competitive, more specific and narrowly targeted keywords or phrases.
The Best Keyword Research Tools Are Free!
Google's two free keyword tools listed below are a great way to discover keywords that may be worth targeting in your content.

5. Create Fresh and Unique Content Using Your Keywords

Technical Skill Requirement: None
Difficulty: Low to Moderate
Publishing keyword-rich original content is absolutely crucial to ranking highly. All you need to do is transform your list of carefully selected keywords into pages of unique web content. Write pages of at least 200 words of unique text, incorporating one, two, or at the most three of your chosen keywords into the copy of each page. Your home page may have less content, but should target your most important two or three keywords.
What does unique text mean? It means that you produce original content. It means you haven't simply copied verbatim from other websites or blogs. If you don't have enough of your own ideas about content look at what other have written, then re-write it making it better. You can make it shorter and more concise, or longer and more detailed. Just don't copy it.
Search engines must find and "read" keyword rich copy on your pages so they can properly classify or "index" your site. The frequency (or density) of keyword usage is also important. For best results repeat each keyword or phrase, or variations of the phrase, 2 to 4 times within your copy (depending on its length). Be sure to put it at least once in a headline using the <H1> or <H2> HTML code. More is not better. A higher keyword density than this can often cause search engines to penalizing your site. Never use "invisible text" or text on your Web pages that is the same color as the background. It will also result in search engine penalties.
Placing keywords on your website:
Your website content should be written first for real people, and second for search engine crawlers. For your website to be successful you need to keep both in mind. Keywords are important for both audiences. They help real people skim your page, and help the search engines figure out what your page is about.
Writing marketing copy for your website doesn't need to be difficult and it surely doesn't need to be lengthy. In fact, keep three simple things in mind, along with your keywords, and it'll practically write itself: Benefits, Benefits, Benefits!
Don't just tell the customer you have a great widget at a great price. Tell them what that widget will do to make their lives better, easier, safer, more important. If it saves them time, improves results, etc. - tell them that, and briefly tell them how. Show then the Benefits, not the "features."
Always tell the truth. You can say anything ,but if its intentionally misleading, your profits and your business are going to be short-lived. Make your website copy sizzle, and make it sell, but always make it honest.
Make it personal: all about You and Your. It might not seem like much, but if you can drop ?your? into your copy, it?s sure to draw the customer in, whether they realize it or not.
Before you put up new content on your site, read it and then read it again out loud. If you can, have someone else look it over. There?s nothing worse publishing great copy that?s tarnished by typos.
Nine good places to use your keywords:
1. In your page title. This is what appears at the top of the browser window when someone visits your website. (See step 8 below)
2. In your page description. Visitors don't see this, but the search engines do. This is the two lines of text that appear below the main title in search engine results. (See step 9 below)
3. In your page URL. Use keywords, not strings of alphanumeric characters, in the URLs of each page of your site. Search engines will index them much better and display them higher in search results. Creating page URLs with keywords helps those pages rank higher. Simply insert the linked-to page's targeted keyword phrase into the hyperlink whenever possible. Here is a good example from Allrecipes.com: Allrecipes.com/Recipe/Fettuccini-with-Salsa-Cruda-and-Feta/Detail.aspx
4. In the headings and subheadings. Make it easy for your readers to very quickly see what your page is about by using lots of headings and subheadings.
5. In the first sentence and your first paragraph. Make sure your important keywords appear first -- the earlier, the better.
6. In the last paragraph. Also use your keywords at the end of your content.
7. Elsewhere in the page copy. When keywords fall naturally throughout your article, consider bolding them. But don't go overboard with it or it will become a distraction. However, if it makes the article easier to skim, bold your keywords.
8. In your text links. Instead of linking to words like "click here," use your keywords in your link anchor text.
9. In the ALT tags on images. The search engines can't understand images. With every image, include a bit of text called the ALT tag and use your keywords in that text. (See step 10 below)

6. Title Tag Optimization

Technical Skill Requirement: Low
Difficulty: Easy to Moderate
This is what the title tag on Dell.com looks like: <META NAME="TITLE" CONTENT="Dell - Official Website - Learn about Dell's laptops, desktops, monitors, printers plus computer electronics & accessories. ">
HTML title tags are critical because search engines use them when deciding what a web page is about. Using descriptive words and phrases in your Title tags helps both people and search engines better understand the focus of the page. Include your most important keywords in this tag. Space is limited (use a maximum of 69 total characters) so don't include your company name unless you really think it needs to be there (as in our example from Dell). Do not use the Title tag to display irrelevant information such as "Home Page." Think of it more as a "Title Keyword Tag" and include words that users would likely search for to find the product or service or other information on that page.
Lengths of Page Title (taken from your Title Tag) Displayed in Search Engines (including spaces):
Google displays up to 69 characters, Yahoo displays up to 72 characters, Bing displays up to 69 characters
The Title tag is the most important tag to optimize on your webpage because:
  • Search engines place a lot of importance on the words used in the title tag when determining your page ranking and keyword indexing.
  • They are used as the title for your search engine results listings, giving a critical "first impression" to search engine users.
  • They are used as the bookmark heading when someone bookmarks a page in your site.
Good Title Tags Made Simple
Here's a simple method for writing title tags that will boost your rankings:
  • Start the title with the top keyword or phrase for which you are trying to get high rankings. Be sure that the keyword is well used on your webpage so the Title Tag is clearly relevant to the page as a whole.
  • Insert a hyphen or double-colon to separate the initial keyword from what comes next to help make the title more readable.
  • Then describe the webpage in five words or less while using all or part of your target keyword or phrase again.

7. Description Tag Optimization

Technical Skill Requirement: Low
Difficulty: Easy to Moderate
The Meta Description Tag is the next most important tag, since search engines frequently use it as the description for your page's listing. The content in your description tags often appears as the "snippets" of text underneath the blue Title tag headline in search results pages. A well written description tag increases the chance that your search listing will be clicked on.
Here is an example: a keyword search for "big mac" produces the following result as the third organic listings:
By visiting the McDonalds.com home page and viewing the page source, you can see that the snippet above simply reuses the first 149 characters of the page's meta description:
<meta name="description" content="McDonald's in the USA: Food and nutrition info, franchise opportunities, job and career info, restaurant locations, promotional information, history, innovation and more." />
Here is what you should do to optimize your description tags:
  • Create a unique meta description tag for each page that uses its keywords.
  • Create "meaty" description tags that accurately describe the page and product to search users and respect the character limits noted below.
  • Include words that users would most likely search for to find the product, service or information on that page.
Meta Description Lengths Displayed in Search Engines (including spaces) Google displays up to 156 characters Yahoo displays up to 161 characters Bing displays up to 185 characters
Good Description Tags Made Simple Begin the description tag with the same keyword phrase you used in the title tag, followed by a dash or double colon. Then use it to start a sentence describing your webpage in 10 to 15 words.
Here are a few guidelines to follow when writing description tags:
  • The entire tag should be no longer than 22 words (156 characters).
  • It should briefly describe the webpage and entice users to click on your listing.
  • The keyword should be used no more than two times in total.
Here's a simple layout for writing description tags that will boost your rankings:
[Your Keyword or Key Phrase] - [A Brief Description of Page]
If you only have a little time to optimize your site for better search engine rankings, at least write good Title and Description tags. They are a fundamental requirement for improved search ranking.
Note: The Keyword meta tag is not given ANY consideration at all by Google or the other major search engines and should not be used.

8. Take Advantage of Other Simple HTML Opportunities

Technical Skill Requirement: Low
Difficulty: Easy
Don't overlook other HTML code elements to extract a little more love from the search engines. You can boost your rankings and nudge visitors along your "buy path" by providing more information in your HTML code. Here are some of the ways you can easily boost your search engine rankings:
Use text headings (using heading tags <H1><H2><H3>) Text placed within a heading tag is used to briefly describe the topic of the section of a page it introduces. The use of text "heading" tags is important to the user as visual clues, but they are also used to indicate the importance of the words or phrases to the search engines. It allows search engines to make better sense of the words and phrases on the page in a way that changes in font size doesn't. Some sites don't use them because they don't like the way they look, but heading tags can easily be made to look any way you like by including them in your style sheets.
Use Inter-site "anchor text" links Creating keyword-rich internal text links within your site will also help. Use this tactic in moderation as too many links between your pages can actually harm you. Testing has shown good results by creating links between the first 10 pages that you will find listed in.
Google's results when you search for site:www.mydomain.com (simple add "site:" to your home page URL, all as one word, and search for that "combined" word in Google)
Use Image Alt Tags Alt tags (Alternative Text Tags) were developed so that if an image is unavailable, you can still see an alternative text description of it.
However, alt tags are also an additional type of content, in which you can display information to visitors and search engines by using the alt and title attributes, like this: <img src="smilingbaby.gif" alt="Smiling Baby" title="Smiling Baby"/>. Note that search engines will index the both the alt and title content, but usually prefer the title content if available.

9. Eliminate Broken Links and Error pages

Technical Skill Requirement: Low
Difficulty: Easy
Broken links that produce "Page Not Found" error messages are harmful to your site. They reduce search engine crawling efficiency and accuracy, meaning that some of your content may not be listed (or indexed) in search engine databases. They also "dilute" your site's overall search engine rank. Plus, they are one of the easiest ways to lose potential customers. Broken links and error messages create a highly negative and unprofessional impression to visitors, frequently causing them to leave and not return.
We strongly recommend regularly checking your entire site for error pages. Your SEO Tools account includes a broken links report and tool that helps find both the error page URL and all the links to it within your site. Use the tool to remove all internal links to error pages, and then use the solutions below for any possible external links to them.
Create a Custom 404 Error Page A good 404 error page advises visitors that they've hit an invalid URL, and then provides other links to direct help them to their intended destination.
Use 301 Redirects If you move or rename pages, use 301 redirects to automatically transfer them from the old page location to its new permanent home. This redirect is anonymous to your site visitor.
If you can't implement custom 404 pages or 301 redirects, contact your web developer for assistance.

10. Develop (or Exercise) Patience

Technical Skill Requirement: None
Difficulty: Moderate
Don't expect quick results. Using these simple techniques will indeed deliver more traffic from Google and other search engines, but it takes a little time. There's no getting around that fact. Once you start following the steps above, your site's ranking will slowly but surely rise. While you should start seeing results within weeks, big improvements usually requires a little more time and effort. However, these efforts ALWAYS pay off
Take the time to keep implementing the Google Guidelines. Google rewards sites meeting their guidelines with higher placement in search results, and more search traffic.

Source: https://gator486.hostgator.com:2083/3rdparty/attracta/index.live.pl?id=37

Friday, October 12, 2012

Facebook New Looks

By: Bidur Adhikari ( http://www.biduradhikari.com.np/ )
Posted By: http://www.clickforwebs.ocm

As Social Media have become a new way to be social . Our generation are trying to be in extreme level that they can think of. In the new approach way to communicate, One social media called "FACEBOOK" have lunch new look for its user. 

FaceBook New Look.





As you can see the three buttons are replaced from Left to right. For this design lets see how many likes we get ( Just kidding ).Have fun with New Facebook look.

 ( http://www.biduradhikari.com.np/ )

Wednesday, June 6, 2012

Web hosting in Nepal | Web Hosting Service

 By : Bidur Adhikari
Category : Web hosting service
Source:  Wikipedia, the free encyclopedia

Web Hosting Services

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (March 2009)







An example of rack mounted servers
Part of a series on
Internet hosting service
Full-featured hosting  Virtual private server
    Dedicated hosting
    Colocation centre
    Cloud hosting
    Web hosting
    Free hosting
    Shared
    Clustered
    Reseller

Application-specific web hosting
    Blog (comments)
    Guild hosting
    Image
    Video
    Wiki farms
    Application
    Social network

By content format
    File
    Image
    Video
    Music

Other types
    Remote backup
    Game server
    DNS
    E-mail

A web hosting service is a type of Internet hosting service that allows individuals and organizations to make their website accessible via the World Wide Web. Web hosts are companies that provide space on a server owned or leased for use by clients, as well as providing Internet connectivity, typically in a data center. Web hosts can also provide data center space and connectivity to the Internet for other servers located in their data center, called colocation, also known as Housing in Latin America or France.

The scope of web hosting services varies greatly. The most basic is web page and small-scale file hosting, where files can be uploaded via File Transfer Protocol (FTP) or a Web interface. The files are usually delivered to the Web "as is" or with minimal processing.[1] Many Internet service providers (ISPs) offer this service free to subscribers. Individuals and organizations may also obtain Web page hosting from alternative service providers. Personal web site hosting is typically free, advertisement-sponsored, or inexpensive. Business web site hosting often has a higher expense.

Single page hosting is generally sufficient for personal web pages. A complex site calls for a more comprehensive package that provides database support and application development platforms (e.g. PHP, Java, Ruby on Rails, ColdFusion, or ASP.NET). These facilities allow customers to write or install scripts for applications like forums and content management. Also, Secure Sockets Layer (SSL) is typically used for e-commerce.

The host may also provide an interface or control panel for managing the Web server and installing scripts, as well as other modules and service applications like e-mail. Some hosts specialize in certain software or services (e.g. e-commerce), which are commonly used by larger companies that outsource network infrastructure.
Contents

    1 Reliability and uptime
    2 Types of hosting
    3 Obtaining hosting
    4 See also
    5 References
    6 External links

Reliability and uptime
Multiple racks of servers

The availability of a website is measured by the percentage of a year in which the website is publicly accessible and reachable via the internet. This is different than measuring the uptime of a system. Uptime refers to the system itself being online, however it does not take into account being able to reach it as in the event of a network outage.

The formula to determine a system’s availability is relatively easy: Total time = 365 days per year * 24 hours per day * 60 minutes per hour = 525,600 minutes per year. To calculate how many minutes of downtime a system may experience per year, take the uptime guarantee and multiply it by total time in a year.

In the example of 99.99%: (1 - .9999) * 525,600 = allowable minutes down per year.

The following table shows the translation from a given availability percentage to the corresponding amount of time a system would be unavailable per year, month, or week.
Availability %     Downtime per year     Downtime per month*     Downtime per week
90% ("one nine")     36.5 days     72 hours     16.8 hours
95%     18.25 days     36 hours     8.4 hours
97%     10.96 days     21.6 hours     5.04 hours
98%     7.30 days     14.4 hours     3.36 hours
99% ("two nines")     3.65 days     7.20 hours     1.68 hours
99.5%     1.83 days     3.60 hours     50.4 minutes
99.8%     17.52 hours     86.23 minutes     20.16 minutes
99.9% ("three nines")     8.76 hours     43.2 minutes     10.1 minutes
99.95%     4.38 hours     21.56 minutes     5.04 minutes
99.99% ("four nines")     52.56 minutes     4.32 minutes     1.01 minutes
99.999% ("five nines")     5.26 minutes     25.9 seconds     6.05 seconds
99.9999% ("six nines")     31.5 seconds     2.59 seconds     0.605 seconds

* For monthly calculations, a 30-day month is used

A hosting provider’s SLAs may include a certain amount of scheduled downtime per year in order to perform maintenance on the systems. This scheduled downtime is often excluded from the SLA timeframe, and needs to be subtracted from the Total Time when availability is calculated. Depending on the verbiage of an SLA, if the availability of a system drops below that in the signed SLA, a hosting provider often will provide a partial refund for time lost.
Types of hosting
A typical server "rack" commonly seen in colocation centres

Internet hosting services can run Web servers.

Many large companies, which are not internet service providers, also need a computer permanently connected to the web to send email, files, etc. to other sites. The company may use the computer as a website host to provide details of their goods and services and serve for online orders.

    Free web hosting service: offered by different companies with limited services, sometimes supported by advertisements, and often limited when compared to paid hosting.
    Shared web hosting service: one's website is placed on the same server as many other sites, ranging from a few to hundreds or thousands. Typically, all domains may share a common pool of server resources, such as RAM and the CPU. The features available with this type of service can be quite extensive. A shared web may be hosted with a reseller.
    Reseller web hosting: allows clients to become web hosts themselves. Resellers could function, for individual domains, under any combination of these listed types of hosting, depending on who they are affiliated with as a reseller. Resellers' accounts may vary tremendously in size: they may have their own virtual dedicated server to a colocated server. Many resellers provide a nearly identical service to their provider's shared hosting plan and provide the technical support themselves.
    Virtual Dedicated Server: also known as a Virtual Private Server (VPS), divides server resources into virtual servers, where resources can be allocated in a way that does not directly reflect the underlying hardware. VPS will often be allocated resources based on a one server to many VPSs relationship, however virtualisation may be done for a number of reasons, including the ability to move a VPS container between servers. The users may have root access to their own virtual space. Customers are sometimes responsible for patching and maintaining the server.
    Dedicated hosting service: the user gets his or her own Web server and gains full control over it (user has root access for Linux/administrator access for Windows); however, the user typically does not own the server. Another type of Dedicated hosting is Self-Managed or Unmanaged. This is usually the least expensive for Dedicated plans. The user has full administrative access to the server, which means the client is responsible for the security and maintenance of his own dedicated server.
    Managed hosting service: the user gets his or her own Web server but is not allowed full control over it (user is denied root access for Linux/administrator access for Windows); however, they are allowed to manage their data via FTP or other remote management tools. The user is disallowed full control so that the provider can guarantee quality of service by not allowing the user to modify the server or potentially create configuration problems. The user typically does not own the server. The server is leased to the client.
    Colocation web hosting service: similar to the dedicated web hosting service, but the user owns the colo server; the hosting company provides physical space that the server takes up and takes care of the server. This is the most powerful and expensive type of web hosting service. In most cases, the colocation provider may provide little to no support directly for their client's machine, providing only the electrical, Internet access, and storage facilities for the server. In most cases for colo, the client would have his own administrator visit the data center on site to do any hardware upgrades or changes.
    Cloud hosting: is a new type of hosting platform that allows customers powerful, scalable and reliable hosting based on clustered load-balanced servers and utility billing. A cloud hosted website may be more reliable than alternatives since other computers in the cloud can compensate when a single piece of hardware goes down. Also, local power disruptions or even natural disasters are less problematic for cloud hosted sites, as cloud hosting is decentralized. Cloud hosting also allows providers to charge users only for resources consumed by the user, rather than a flat fee for the amount the user expects they will use, or a fixed cost upfront hardware investment. Alternatively, the lack of centralization may give users less control on where their data is located which could be a problem for users with data security or privacy concerns.
    Clustered hosting: having multiple servers hosting the same content for better resource utilization. Clustered Servers are a perfect solution for high-availability dedicated hosting, or creating a scalable web hosting solution. A cluster may separate web serving from database hosting capability. (Usually Web hosts use Clustered Hosting for their Shared hosting plans, as there are multiple benefits to the mass managing of clients)
    Grid hosting: this form of distributed hosting is when a server cluster acts like a grid and is composed of multiple nodes.
    Home server: usually a single machine placed in a private residence can be used to host one or more web sites from a usually consumer-grade broadband connection. These can be purpose-built machines or more commonly old PCs. Some ISPs actively attempt to block home servers by disallowing incoming requests to TCP port 80 of the user's connection and by refusing to provide static IP addresses. A common way to attain a reliable DNS host name is by creating an account with a dynamic DNS service. A dynamic DNS service will automatically change the IP address that a URL points to when the IP address changes.

Some specific types of hosting provided by web host service providers:

    File hosting service: hosts files, not web pages
    Image hosting service
    Video hosting service
    Blog hosting service
    Paste bin
    Shopping cart software
    E-mail hosting service

Obtaining hosting

Web hosting is often provided as part of a general Internet access plan; there are many free and paid providers offering these types of web hosting.

A customer needs to evaluate the requirements of the application to choose what kind of hosting to use. Such considerations include database server software, scripting software, and operating system. Most hosting providers provide Linux-based web hosting which offers a wide range of different software. A typical configuration for a Linux server is the LAMP platform: Linux, Apache, MySQL, and PHP/Perl/Python. The web hosting client may want to have other services, such as email for their business domain, databases or multi-media services for streaming media. A customer may also choose Windows as the hosting platform. The customer still can choose from PHP, Perl, and Python but may also use ASP .Net or Classic ASP. Web hosting packages often include a Web Content Management System, so the end-user does not have to worry about the more technical aspects.

Source : http://en.wikipedia.org/wiki/Web_hosting_service

Wednesday, August 25, 2010

Click For Webs --Freelancer,Web Hosting,Domain Resistration.

Hello! We are professional team of designers and we would like to share our passion with you!
Welcome to Click-for-webs Nepal -is Web Hosting Management ( WMH panel ) web development company and a leading web design company based in Kathamndu, Nepal. We are committed to deliver creative quality solutions by using latest technology and our vast experience.
We offer services
1. Domain Registration
2. Web Development
3. Content Management System(CMS) :: Like Drupal, Word-press, Joomla.
4. Website Design,Layout Design, PHP and MySQL,Flash Animation
5. eCommerce Solutions
6. Offshore Outsourcing
7. PSD to HTML
8. Search Engine Optimization(SEO)
9. Web Hosting and Website Optimization.