hei folks, i found something that strange. i have site that when i checked with site:www.blablabla.com and site:blablabla.com they have different indexed pages. what"s the problem? is it from sitemap? my other site is still okay
you have to redirect either www to non-www or non-www to www with 301 redirection and after few days it will all be fine.
That would pose a problem. My forum webcosmoForums.com has PR3 where the homepage index.php has PR4. For problems like this its better to do the 301 redirect for all non-www pages to www version.
301 redirect or change settings in google webmaster tools to display only one or the other for all pages - otherwise duplication will be an issue copied from matt cutts blog, "Q: What is a canonical url? Do you have to use such a weird word, anyway? A: Sorry that it’s a strange word; that’s what we call it around Google. Canonicalization is the process of picking the best url when there are several choices, and it usually refers to home pages. For example, most people would consider these the same urls: * www.example.com * example.com/ * www.example.com/index.html * example.com/home.asp But technically all of these urls are different. A web server could return completely different content for all the urls above. When Google “canonicalizes†a url, we try to pick the url that seems like the best representative from that set."