Multisites Network SEO::Can self-referencing canonical tag(rel="canonical") inside article improve google rating?

Posted by user5674576 on Pro Webmasters See other posts from Pro Webmasters or by user5674576
Published on 2011-03-17T17:32:01Z Indexed on 2011/03/18 0:19 UTC
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Hi,

Can self-referencing canonical tag(rel="canonical") inside article improve google rating?

The Case:

  1. Company have 40 sites with original content and 1 main site with some of 40 sites articles.

  2. Main site have rel="canonical" in each article

Should article in original site have also rel="canonical" for self-referencing?


example:

inside main network site(reference to other site):<link href="http://site7.com/article25" rel="canonical" />

inside original network site(self-reference):<link href="http://site7.com/article25" rel="canonical"/>

Thanks in advance

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