wheel - 6:58 pm on Jul 1, 2011 (gmt 0)

The original algo has changed and Google is moving to social and behavioral ranking factors,

Not to jump on your post, but this is blatant speculation. The are not moving to social and behavioral factors, some people are speculating that it's a small part of the algo.

If you read that post, the entire thing can be summarized in one word:

relevance

If you're going to read Google and do what they tell you, that's the word we should be looking at.