What do you think about this article: "SEO and Social Media – Friends or Strangers?"
Do you think that Social Media contributes to better SEO?
In my opinion it helps a lot, but in not so direct way. Profile in social media won't help you to get higher rank on Google but it will help you to build your reputation, which in fact is an important part of SEO services.
The article was edited by me and you will help me a lot if you share your opinion here.