Michael pointed out that on page twenty of the guide, under the "Good practices for promoting your website" section Google writes you should avoid:
involving your site in schemes where your content is artificially promoted to the top of these services
Michael feels we will soon see a tool in Webmaster Central named "How to report social media spam."
Of course, social media and SEO go very well together. But like anything that works well with SEO, it does get abused. The question is, is Michael right here? Do we have something to worry about?
Forum discussion at Sphinn.