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Google, Microsoft, Yahoo Agree On 'Canonical Tag'

Rivals Google, Microsoft and Yahoo have united on a way to reduce duplication content that could improve the quality of online searches on your site. Google team members Joachim Kupke and Maile Ohye explain if your site has identical or vastly similar content accessible through multiple URLs, this tag format provides more control for URLs returned in search results.

The canonical attribute supported in the HTML link tag enables webmasters to specify the URL you prefer. Adding the tag to all the duplicate pages tells the search engines the version you want to use. Kupke and Ohye provide code and examples, stepping through the process.

Read the whole story at Google Webmaster Central »

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