Bandcamp

Basically, Bandcamp is a webmarket where musicians post their music and you can purchase it in a number of digital formats. I think its cool for two reasons. 1) It seems like a a very convenient way for independent artists (and its mostly no-names) to get really conspicuous and user friendly exposure 2) ALL TRACKS ON ALL ALBUMS ARE FULLY PREVIEWABLE. You can listen to the album in full before you choose to buy it (or otherwise retrieve it.)