It's great that something was built. Amen.
Similar problems to chatroulette, i.e., cyberdisinhibitionism, backgrounds/communication impedance mismatches, although hopefully not as many flashers.
My luck, I'd get the homeless guy at the coffee shop breathing into the microphone saying "I never use my real name. And, I always wear extra tin foil in winter when the mind beams are stronger. The FBI has a file on me a mile high. They're out to get me. Do you hear those voices too?" (This is based on the personality of a real, harmless person who did live in 24 hour coffeeshops in SV.)