Pandora

For channeling its claim over Internet radio into a $235 million IPO that blew estimates out of the water. A month after the June offering, the service broke its addiction to Flash, launching a beautifully fresh-but-familiar HTML5 redesign. Listener stats continue to rise, even in the wake of Spotify Radio–Pandora saw 13% to 25% listening increases across the top ten U.S. radio markets in the last quarter of 2011.