Forbes discusses Facebook's 10th birthday and a successful decade in business as the world's most popular social network. As the world knows, Mark Zuckerberg originally launched the social network in 2004 as a means for Harvard University students to stay connected. Zuckerberg's idea became so successful that he virtually didn't have to pay for online advertising of Facebook, as word of mouth virally spread about Zuckerberg's social network invention around campus and abroad.

Related: What Facebook Was Doing While You Were Sleeping - Forbes.com

His small invention created out of a college dorm room became a billion dollar venture for him. Because of the success of Facebook, Zuckerberg is in the money for life.