Official Google Webmaster Central Blog: Specify your canonical

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URL

http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html

Description

Boring to 90% of you, but for those of us who run sites with multiple routes-to-content, this'll help make sure that it's the most human-comprehensible on that is listed in Google's index. Apparently Yahoo and MSN will respect the tag, as well. Good news.