He co-founded the most popular social network of all time, had a film made about him even though he's still alive and sent the Myspace empire to its knees. Of course Mark Zuckerberg is loaded! With a net worth estimated at $13.3 billion, we'd say the 29 -year-old is going pretty well for himself. Though he is the face of Facebook, he is certainly not the only founder of the popular site. There were four other people involved in the building of this network that almost makes stalking seem acceptable. Yet, as the one with the most credit and current CEO, he did become the second youngest self-made billionaire of all time. He made the decision in April 2013 to forgo his $500,00 annual income and pass on annual performance bonuses. This probably has something to do with the fact that he earned $2.3 billion in 2012 after cashing out 60 million stock options before the company’s market value dropped. Well played, Zuckerberg!