All I know is that Google is one of the wealthiest corporations in the world, with probably the most specialist staff per cubic meter, who cannot possibly be fooled by SEO tricks any longer. They are getting more and more sophisticated by the day. I'm all for quality SEO strategies, the kind that the owner of Gigalicous persues. But I'd think that Google would look much broader than Google+1 for ranking a site. The +1 would probably get Google's attention, and then anything after that would have to pass some of their many quality tests as well.