Does Google use data from social sites in ranking?

Hello Matt, a recent article of Danny Sullivan suggests that Google uses Twitter and Facebook links as a ranking signal. Can you confirm this? Can you elaborate a little bit more on this? -WebSEOAnalytics Read the article: searchengineland.com Have a question? Ask it in our Webmaster Help Forum: www.google.com Want your question to be answered on a video like this? Follow us on Twitter and look for an announcement when we take new questions: twitter.com More videos: www.youtube.com Webmaster Central Blog: googlewebmastercentral.blogspot.com Webmaster Central: www.google.com