Search Engine Optimization & Sub Domains

Question

I have a site with many pages at different third-level subdomains. I have checked Google Page Ranking. It was different for different subdomains.

How can I tell search engines (Google, Yandex) that all my subdomains are indivisible site with one rating?

Answer 1

To my knowledge, you can't. If they're one indivisible site, there's not really a need for subdomains. You could redirect blog.example.com to example.com/blog, which'll transfer the pagerank there.

Answer 2

You may find using canonical urls helpful, assuming your content is basically the same across different URLs.

http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html