JstaTad
I think the reality is that in order to prevent this from being gamed the same influence and author authority factors in place for Social Sharing will sort of be in place for +1 being a ranking factor beyond personalized results. I totally get the personalization part of it and how it could improve searcher experiences. The real question, as with Social Sharing, is what is the impact on results BEYOND personalization. Yes volume of +1's seem like an obvious signal, but I'm guessing "who" did the +1 is important from the perspective of how much weight a +1 gives in an Algorithm.
Right now I"m most curious about the potential impact on PPC ads. I would guess that a +1 icon with an avatar from someone I follow on the ad will be a big factor in improving click through rates.


Story: Discussion: Impact of Google +1?