Social media tools like Twitter, Facebook, Google + are just making seo on our names ranking.
You can see when you search your name that Google plus pages goes higher and higher as days passes. More people starting to use Google plus and it is turning more fun and useful day by day. For me, Facebook pages are not indexed but Google plus and Twitter ones are indexed.
Seo, search engine optimization? Yes of course.
I am sure Google will win when they make optimization to pass other social media tools in the market in their own search engine.