CNBC for RadiumOne

October 23, 2012

At 16, Gurbaksh Chahal dropped out of high school to focus on his online advertising startup, ClickAgents. By 18, he had sold it for $40 million to ValueClick. He then founded another online advertising startup, BlueLithium, which Yahoo [YHOO  16.67    0.90  (+5.71%)   ] acquired for $300 million in 2007.