Welcome to Gaia! ::

http://www.music-map.com/

Type in your favourite artists and you'll find similar artists displayed on a sort of circular grid. Cool s**t.

http://www.pandora.com

It's a radio that finds similar s**t to what you like and plays it for you. It will play embarrassing things when your friends are around.

http://last.fm

Need I say more?

http://img.420chan.org/m/

It's quite possibly the only NON-pretentious music forum/image board ever.
You can find/request/upload similar music from a wide range of genres if you aren't an idiot. Do yourself a favor and don't say you're from GaiaOnline. Everyone there is pretty ********' chill.

http://boardsofelectronica.blogspot.com/

Also do you like stuff like Boards of Canada?
That site is full of free uploads of some amazing artists. It's also in French.
Gudlukwitdat.

http://gh.ffshrine.org/
http://downloads.khinsider.com/?u=101380
http://www.bluelaguna.net/

If you have a thing for video game soundtracks and random Japanese bands check out this place. It's mainly just the vidya and annie may soundtracks, but you can sometimes find random Jpop and crap. They are good sites to find s**t you can't torrent.

I'll add more later.

what about last FM ?

are you trying to bribe me 0.o

you need to be more active -__-

im active like a mofo

I fixed it.
n_n