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Archive for February, 2009

A little, tiny semantics in action — from Google

February 20th, 2009

I just read about Google’s Canonical Link Tag. It’s a little application of RDFa’s “rel” property. It is not a big thing, but I’m happy it is from Google, who seems quite remote from semantic web technologies.

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

“Last week Google, Yahoo, and Microsoft announced support for a new link element to clean up duplicate urls on sites. The syntax is pretty simple: An ugly url such as http://www.example.com/page.html?sid=asdf314159265 can specify in the HEAD part of the document the following:

That tells search engines that the preferred location of this url (the “canonical” location, in search engine speak) is http://example.com/page.html instead of http://www.example.com/page.html?sid=asdf314159265 .”
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