Facebook CEO Mark Zuckerberg is the most followed user on Google+, a home product of Larry Page and Sergey Brin.
According to the Google+ Statistics counter, Mark Zuckerberg is at number one postion with 21,213 followers, followed by at #2 Larry Page 14,798, and Sergey Brin at #4 with 11,629 fan following.
Other googlers Vic Gundotra at 13,783, blogger Robert Scoble at 11,389, Google spam avenger Matt Cutts at 9,153, TWIT founder Leo Laporte at 7,566, Google's Bradley Horowitz at 7,187.
Google+ Statistics creator Boris Veldhuijzen van Zanten explains the CEO's unlikely popularity thus, "He has the most friends in the world, they made a movie about him, and he is more handsome than the Larry and Sergey." I think the answer goes more like this; The more media coverage someone receives related to Google+, the more followers they get.
[Source: Google+ Statistics counter]