Google Starts Integrating Facebook comments into PageRank formula.
http://www.zdnet.com/blog/facebook/google-starts-indexing-facebook-comments-ajaxjavascript-content/4978
In a previous blog post written by an anonymous student, it is stated that Microsoft and Facebook have teamed up to help Microsoft’s Bing search engine count comments made when using Facebook’s comment dialog on other sites. It is said that this is a move aimed at making Bing’s “search engine optimization” strategy better and more accurate than Google’s.
Perhaps as a response, Google has just announced that they have taught GoogleBot how to read “comments that are dynamically loaded in AJAX or Javascript. This means that Google’s search spider can now read and count comments from Facebook comments boxes, Intense Debate, and Disqus.
Integrating these comment boxes greatly expands the web of networks for Google and Bing, and increases the accuracy of both of their search engine optimization algorithms by giving the PageRank more accurate estimates of the amount of pages touching each link. This increases the accuracy all-around, and likely supplies a new tributary of data for each company to mine.