Online Wiz, 29, Sells Firm for $170M

Aaron Patzer recently joined the ranks of America's under-30 tech multi-millionaires when rival firm Intuit snapped up his Mint.com online personal finance tool for $170 million. "It was a jaw-dropping moment" when Intuit—which is transferring its 43 million Quicken users to Mint—made the offer, Patzer tells the New York Times.

Patzer, who has now joined Intuit as a vice-president, says he's sure another young person is already working on a tool to replace Mint. "In a technology company, if you let up just a couple of years in your innovation, that’s all the gap a competitor needs. That’s what happened with Intuit. They ignored and neglected Quicken from about 2002 to 2008, and that was enough of a gap to give rise to Mint. If I back off even for a second, someone is going to come along with something better." (More Aaron Patzer stories.)