On the one hand, there is the mindset that Zuckerberg deserved the award; after all, Facebook affects the lives over half a billion people around the globe. On the other hand, a reader poll published by TIME reveals that the overwhelming choice for "Person of the Year" was Julian Assange, the man behind the Wikileaks cable releases that have taken the internet--and the world at large--by storm. Zuckerberg took tenth place on the same poll.
We sampled a range of opinions from across Twitter and compiled them into a slideshow (below). See what tweeters have to say, and vote for your favorite tweets. Do you think Zuckerberg is a controversial choice for "Person of the Year?" Whom would you have nominated? Let us know in the comments below, then check out our slideshow of TIME POTY honorees from the past 30 years.