tedster - 8:29 pm on Dec 1, 2010 (gmt 0)

There was another confirmation here about Facebook signals too - where a product page that was discontinued for nine years suddenly began to rank after it "went viral" on Facebook.

Here's yet another related discussion: SEO is from Mars, SMM is from Venus [webmasterworld.com]. I think Google's comments in today's interview should help remove some of the doubts expressed in that discussion.