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i just recently stumbled across them... while trying to find some new music.. everytime i try to ask for suggestions on new music i get a bunch of crap >.< no one seems to share much with me in tastes of music...
Well based on your username, I'm gonna guess you like nu-metal (slipknot)?
I personally hate nu-metal. Slipknot is probably one of my least favorite bands too. So yea, I doubt you'd like any of my suggestions for good bands.
But try http://pandora.com
Just put in a band you like, and it should give some results you may like.
Unfortionately, there aren't too many of the more "underground" bands I like on there, so I never gained too much from it.