How's this for irony: Google+ is a Facebook competitor ... but its most popular user is none other than Mark Zuckerberg. Zuck hasn't even posted to Google+ yet, the Atlantic notes, but according to tracking service Social Statistics, he has amassed the most followers; in second is Larry Page. A peek at their Google+ profiles reveals that Zuck is nearing 35,000 followers (in Google+ lingo, 34,759 people "have Mark in circles"), while Page, who last posted on June 29, has nearly 24,000. Click for more on Google+. (More Google Plus stories.)