I think it's clear that google has a goal as a company of being more social, and that is shown with many google properties. I'm posting from my phone right now so I don't have specific links but I've read many times that google is starting to put much more emphasis on social and user behavior to determine how a site should rank. It's obviously very tough for google to determine which site is more relevant or authoritative than the next using algorithms and math, so it seems as though they basically want to "outsource" determining relevance and authority. They can outsource this to the public by watching how people interact with a site. More page views as a percentage, time on site, social interactions with a site/ brand , ect, will clearly tell google which sites are most relevant in the eyes of the user. I strongly believe that this will become more and more important to google and that they'll start ranking sites accordingly. Sounds to me like we should all be building bots to replicate site visitors and that socially interact with our sites. Thoughts?