What makes your service better than all the other startups offering anonymous conversations among college students? All of them have basically been proven to be fads, popular for a brief time among gay kids looking for hookups and people looking for vicodin, but then rapidly losing popularity after a few months. (I'm thinking specifically of boredat.net and juicycampus.com.) I'll admit I've never used the competing sites so I don't know much about them, but I also don't see much that differentiates your site either.