Yeah I don't think my biggest problem is finding beat makers but instead the musicians who will buy the beats. I just sent about a dozen messages through myspace to different beat makers which doesn't seem like alot but I made all the message personalized so they would get back to me. I took your advice Fanocks and I actually just got back a reply:

"that would be good but you are gonna need a whole bunch of promotion because people are always skeptical about buying beats online"

The producer who sent me that is pretty popular but what he's saying is what I'm worried about. I know there are a bunch of people selling beats but how many are buying. I wish there was a way I could find out how profitable my competition is. I'm going to write a business plan and then I'll get back to everyone.