Breakout Companies of 2010

Michael Edwards
9 of 11

Pandora Radio
San Francisco
Founded in 2000

Why they’re on the list: For adding 90,000 new subscribers a day

Thanks to the advent of Pandora Radio, the days are long gone of having to change the dial on your radio to find a song you want to listen to. The company enables users to specify the artists and songs they enjoy and then streams similar music via a customized channel. The company operates on a “freemium” model, where it offers both advertising-supported free listening for up to 40 hours a month as well as an ad-free fee-based model. Pandora now offers more than 800,000 tracks in its library and boasts some 65 million users who listen, on average, for more than 10 hours per month – many of whom now do so via their smart phone.