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Google的一点点语义[2009]

原文写于2009-02-20

http://tw.rpi.edu/weblog/2009/02/20/a-little-tiny-semantics-in-action-from-google/

A little, tiny semantics in action — from Google

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

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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