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salam every one, this is a topic from google web master centrale blog: Webmaster Level: All

Today we’re announcing schema.org, a new initiative from Google, Bing and Yahoo! to create and support a common set of schemas for structured data markup on web pages. Schema.org aims to be a one stop resource for webmasters looking to add markup to their pages to help search engines better understand their websites.

At Google, we’ve supported structured markup for a couple years now. We introduced rich snippets in 2009 to better represent search results describing people or containing reviews. We’ve since expanded to new kinds of rich snippets, including products, events, recipes, and more.


Adoption by the webmaster community has grown rapidly, and today we’re able to show rich snippets in search results more than ten times as often as when we started two years ago.

We want to continue making the open web richer and more useful. We know that it takes time and effort to add this markup to your pages, and adding markup is much harder if every search engine asks for data in a different way. That’s why we’ve come together with other search engines to support a common set of schemas, just as we came together to support a common standard for Sitemaps in 2006. With schema.org, site owners can improve how their sites appear in search results not only on Google, but on Bing, Yahoo! and potentially other search engines as well in the future.

Now let’s discuss some of the details of schema.org relevant to you as a webmaster:

1) Schema.org contains a lot of new markup types.
We’ve added more than 100 new types as well as ported over all of the existing rich snippets types. If you’ve looked at adding rich snippets markup before but none of the existing types were relevant for your site, it’s worth taking another look. Here are a few popular types:

• Creative works: CreativeWork, Book, Movie, MusicRecording, Recipe, TVSeries
• Embedded non-text objects: AudioObject, ImageObject, VideoObject
• Event
• Organization
• Person
• Place, LocalBusiness, Restaurant
• Product, Offer, AggregateOffer
• Review, AggregateRating

Or, view a full list of all schema.org types. The new markup types may be used for future rich snippets formats as well as other types of improvements to help people find your content more easily when searching.

2) Schema.org uses microdata.
Historically, we’ve supported three different standards for structured data markup: microdata, microformats, and RDFa. We’ve decided to focus on just one format for schema.org to create a simpler story for webmasters and to improve consistency across search engines relying on the data. There are arguments to be made for preferring any of the existing standards, but we’ve found that microdata strikes a balance between the extensibility of RDFa and the simplicity of microformats, so this is the format that we’ve gone with.

To get an overview of microdata as well as the conventions followed by schema.org, take a look at the schema.org Getting Started guide.

3) We’ll continue to support our existing rich snippets markup formats.
If you’ve already done markup on your pages using microformats or RDFa, we’ll continue to support it. One caveat to watch out for: while it’s OK to use the new schema.org markup or continue to use existing microformats or RDFa markup, you should avoid mixing the formats together on the same web page, as this can confuse our parsers.

4) Test your markup using the rich snippets testing tool.
It’s very useful to test your web pages with markup to make sure we’re able to parse the data correctly. As with previous rich snippets markup formats, you should use the rich snippets testing tool for this purpose. Note that while the testing tool will show the marked up information that was parsed from the page, rich snippets previews are not yet shown for schema.org markup. We’ll be adding this functionality soon.

The schema.org website and the rich snippets testing tool are in English. However, Google shows rich snippets in search results globally, so there’s no need to wait to start marking up your pages.

To learn more about rich snippets and how they relate to schema.org, check out the Rich snippets schema.org FAQ.

By Kavi Goel and Pravir Gupta, Search Quality teamthis is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com

salam every one, this is a topic from google web master centrale blog: Written by Maile Ohye

Many of you have asked for more information regarding webserving techniques (especially related to Googlebot), so we made a short glossary of some of the more unusual methods.

• Geolocation: Serving targeted/different content to users based on their location. As a webmaster, you may be able to determine a user's location from preferences you've stored in their cookie, information pertaining to their login, or their IP address. For example, if your site is about baseball, you may use geolocation techniques to highlight the Yankees to your users in New York.
  
  The key is to treat Googlebot as you would a typical user from a similar location, IP range, etc. (i.e. don't treat Googlebot as if it came from its own separate country—that's cloaking).


• IP delivery: Serving targeted/different content to users based on their IP address, often because the IP address provides geographic information. Because IP delivery can be viewed as a specific type of geolocation, similar rules apply. Googlebot should see the same content a typical user from the same IP address would see.
  
  (Author's warning: This 7.5-minute video may cause drowsiness. Even if you're really interested in IP delivery or multi-language sites, it's a bit uneventful.)


• Cloaking: Serving different content to users than to Googlebot. This is a violation of our webmaster guidelines. If the file that Googlebot sees is not identical to the file that a typical user sees, then you're in a high-risk category. A program such as md5sum or diff can compute a hash to verify that two different files are identical.


• First click free: Implementing Google News' First click free policy for your content allows you to include your premium or subscription-based content in Google's websearch index without violating our quality guidelines. You allow all users who find your page using Google search to see the full text of the document, even if they have not registered or subscribed. The user's first click to your content area is free. However, you can block the user with a login or payment request when he clicks away from that page to another section of your site.
  
  If you're using First click free, the page displayed to users who visit from Google must be identical to the content that is shown to the Googlebot.

Still have questions?  We'll see you at the related thread in our Webmaster Help Group.this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com

salam every one, this is a topic from google web master centrale blog:

Webmaster Level: all

In order to use Google services like Webmaster Tools and Google Apps you must verify that you own the site or domain. One way you can do this is by creating a DNS TXT record to prove your ownership of the domain. Now you can also use DNS CNAME records to verify ownership of your domains. This is a new domain verification option for users that are not able to create DNS TXT records for their domains.

For example, if you own the domain example.com, you can verify your ownership of the domain by creating a DNS CNAME record as follows.

1. Add the domain example.com to your account either in Webmaster Tools or directly on the Verification Home page.
   
   
2. Select the Domain Name Provider method of verification, then select your domain name provider that manages your DNS records or "Other" if your provider is not on this list.
   
   
3. Based on your selection you may either see the instructions to set a CNAME record or see a link to the option Add a CNAME record. Follow the instructions to add the specified CNAME record to your domain’s DNS configuration.
   
   
4. Click the Verify button.

When you click Verify, Google will check for the CNAME record and if everything works you will be added as a verified owner of the domain. Using this method automatically verifies you as the owner of all websites on this domain. For example, when you verify your ownership of example.com, you are automatically verified as an owner of www.example.com as well as subdomains such as blog.example.com.

Sometimes DNS records take a while to make their way across the Internet. If we don't find the record immediately, we'll check for it periodically and when we find the record we'll make you a verified owner. To maintain your verification status don’t remove the record, even after verification succeeds.

If you don’t have access to your DNS configuration at your domain name provider you can continue to use any of the other verification methods, such as the HTML file, the meta tag or Google Analytics tag in order to verify that you own a site.

If you have any questions please let us know via our Webmaster Help forum.

Posted by Pooja Wagh, Software Engineerthis is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com