crobb305 - 3:12 am on May 3, 2011 (gmt 0)

I can absolutely, positively tell you that sites that barely any (or none at all) social 'buzz' are ranking and in quite competitive niches.

I have some pages that have been tweeted in the past month, some by tweeters with thousands of followers. Those tweets have not been indexed and there is no sign that they have had any effect on ranking.