I Joined last.fm yesterday, and I must say there are a lot of functions for music discovery within the sites social structure, I’m very pleased with the service so far, still trying to get around the navigation thogh. however some really interesting scripts written by third parties:
eg.
http://www.last.fm/user/spiritquest/journal/2008/03/5/665918/
I also signed up for an artist account, and secured ‘Spirit Quest’ – so I’m going to upload my demo (heheh) well it will be an incentive to work on the tracks properly and get it done properly 