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Founder(s):	Mark Zuckerberg	Steve Chen Chad Hurley Jawed Karim	Jack Dorsey	David Karp
Net Worth:	9.4 Billion*	300 Million+ 300 Million+ 60 Million+	1.1 Billion*	40+ Million
Launced/Founded on:	February 2004	February 2005	March 2006	February 2007

 

 

*As of September 2012