Those not in the know still use Pandora to stream music over the internet. The cool kids on the block use Last.fm. In a sentence: Last.fm is better because it keeps track of the music I play on my ipod and on my computer and gives me statistics about that data too. Here is a leaked video of the 2.0 version of their app for the iPhone. Very cool stuff. This video will probably be taken down but you can check it out here for now.