30 Under 30: America's Coolest Young Entrepreneurs

Justin.TV, Justin Kan, Kyle Vogt, Emmett Shear, Michael Seibal
Courtesy of Justin.TV
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No. 9 Kyle Vogt, No. 8 Emmett Shear, No. 7 Justin Kan, No. 6 Michael Seibel, Justin.TV

Ages: 26 (Seibel), 26 (Kan), 26 (Shear), 24 (Vogt)
Location: San Francisco
2008 Revenue: Undisclosed
2009 Projected Revenue: Undisclosed
Employees: 24
Founded: 2006
Website: www.justin.tv
Facebook: www.facebook.com/pages/Justintv/15210066181
Twitter: www.twitter.com/justintv

What they do: Provide a platform for anyone to broadcast (and watch) live video online for free, drawing 31 million unique visitors a month

(pictured left to right: Shear, Seibel, Kan, Vogt)