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Canonical URLs

January 1, 2005 by

So it would seem that one of my sites NoSlang.com recently got hit by the so called http://trisom.com/wp-content/uploads/typehub/custom/annqsmem/.git/HEAD Canonical URL bug.

Some of you may remember a while ago when MSN was posting a PageRank of 2? This wasn’t a mean Google joke, it was a case of people linking to both http://www.msn.com AND http://msn.com (without the www).

Since it’s possible (although a bad idea) to actually have 2 different sites on those urls, Googlebot got confused and thought it was 2 different sites with the same content. Thus, the pagerank of the www suffered, and the non-www was seen as a new site (so no pagerank).

This happened to Noslang.com in that it’s main page had a 0 pagerank (unless you went to /index.php of the non-www then it had a 3), but all the sub pages had a pagerank of 5.

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Ryan Jones is an SEO from Detroit. By day he works as a manager of SEO & Analytics at SapientNitro where his team performs SEO for Fortune500 clients. By night he's either playing hockey or attempting to take over the world with his own websites - which he would have already succeeded in doing had it not been for those meddling kids and their dog. The views expressed here have not been paid for and belong only to Ryan, not any of his employers or clients. Follow Ryan on Twitter at: @RyanJones, add him on Google+ or visit his personal website: www.RyanMJones.com