Since the launch of Google’s +1 feature, search engine optimizers (SEOs), business owners, and spammers have all circled around the +1. Services have launched selling them, rumors and whitepapers have scattered across the web “proving” that +1’s improve rankings, or “proving” they don’t.
For right now, no one knows for sure what’s going to happen, though educated guesses can be made. We know +1’s will affect the algorithm, so the guesses are how – and, more to the point, how can we take advantage of the +1 button?
http://searchenginewatch.com/article/2106488/Using-Google-1-For-Rankings-Profit