Meh its a ressurected topic but I missed it the first time. So I'll reply
60% of the stuff I get into comes from my 2 so called "scary metal friends", well thats how my flat mates refer to them

whom have very excellent tastes, generally when they say, you have to check out this album, or you have to see these guys when they play, I'll know its worthwhile. They both play in bands and 1 of them has a fairly good distribution deal with a label and I guess is pretty well known round the local scene. They have an amzing collection of demos that puts my handful to shame. I don't know how they do it. They goto gigs and people throw demos at them. I'm lucky if I can get 1 demo handed to me for every 6 or 7 gigs I goto, they'll sometimes get 3 or 4 different bands giving them cd's, It's generally like "Hey you guys rock, you have to check out our shit", The myth about getting chicks from being in a band is crap, but you do get a lot of demos

.
20% of the stuff I listen to comes from general word of mouth hype, at gigs or on the net whatever, if I here enough positive noise about a band or an album I'll check it out eventually.
10 % comes from Metal Archives, I'll find a reviewer whom has similar taste to me and look up other albums they've rated highly.
Last 10% comes from forums and stuff, where I'll ask for reccomendations or download mp3's etc.