Sounds kind of like Garagebands.com. On this site, you can review and criticize songs that people have posted. You can either pay to post a song yourself, or you can get a credit for each review that you do. After so many credits, 8 I think, you can upload a song for free. It's pretty cool in that it has a ranking system, kind of like a top 10 list, but much longer, in the thousand's. The review's are done by misc. people, so there is no biased opinion on the songs..........You can't pick a song to review.
Check out my band:Havoc Din