Presto.fm – Free Music, Listen to Streaming Music Online on Presto Radio. So some friends of mine have built this brilliant music discovery sort of thing. I’ve been fortunate enough to have beta access so I’ve been using it for some time.

To get up and running quickly, just type in a few bands you like and it’ll put together a mix of some of their stuff, but also other bands in a similar vein that you might enjoy. Then you can use one of these new bands as a jumping off point for a whole new slew of recommendations. I’ve discovered countless bands, really esoteric stuff, using this service and I can’t recommend it highly enough.