06/02/2010 05:12 am ET | Updated May 25, 2011

Hot Silicon Valley Startups To Watch

Over the past few weeks, we've asked VCs, angel investors, entrepreneurs, and other tech journalists about their favorite up-and-coming Valley startups. We've written about many of these companies before, obviously, and we'll be writing about many of them again.

In this list, you won't see companies that have been around for years and raised multiple rounds of capital. Instead, you'll see the some of the next generation -- startups working on ideas so exciting that VCs and angels are lining up to throw money at them.