Since its creation in March 2006, and its launch in July 2006, by Jack Dorsey, Twitter has gained popularity worldwide and is estimated to have 190 million users, generating 65 million tweets a day and handling over 800,000 search queries per day. Though the company only started selling ads midway through 2010 (late spring), it still managed to generate $45 million in annual revenue. Even operating at a loss through most of 2010, an addition of $200 million in new venture capital in December 2010 and a forecasted $100 million to $110 million in revenue for 2011 rose the company’s valuation to approximately $3.7 billion as of February 2011.

Net Worth:  increase US $23 billion

Twitter CEO Evan Williams