EditorialGuy - 2:30 pm on Jul 5, 2013 (gmt 0)
Matt Cutts recently said that "social" isn't being used as a ranking factor (understandably, since Likes, +1s, followers, etc. can gamed so easily and are a noisy signal at the best of times).
He also suggested that author authority (possibly what's being called "Author Rank") will be added to the algorithm this summer, but summer began only a couple of weeks ago.
Since you're on Google+, you might want to join the Google+ Authorship & Author Rank Community to keep up with what's happening in that area.