Quote Originally Posted by Dr Unne View Post
It's essentially a way to find new music. You use some music player to tell last.fm what music you listen to on your computer. There are plugins for many music programs that let you do this. Then you can find other people who like the same music as you do. Or show all your friends what music you listen to. Or look at what music other people like. Or you can download a last.fm player program and it will play random music that is similar to music you like, or similar to a list of artists you tell it to search for.
Also, ah man, I figured out SO LATE what's the real purpose behind tagging songs and artists. >_>;

http://last.fm/user/Buckobucko ^^