It’s almost not worth mentioning, but I know one website noticed this, so I’ll talk about it. Last week there was an update to how we canonicalize a small number of urls. What is “canonicalization” again? Read this previous post, or see this post by John Andrews to see all the ways that you can have the same content on urls that are technically different. Some people ask “Why don’t you just assume www.example.com and example.com are the same?” The answer is that they don’t have to be, and for some websites they are different. For example, http://phpicalendar.net/ is a different page than http://www.phpicalendar.net/. This happens more often than you might think; FindWhat has different www vs. non-www pages, for example.
Okay, back on topic. The data for externally visible PageRank didn’t change. The only way someone would notice their PageRank changing last week is for example if they […]
Published by Matt Cutts
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