I went to a couple of these hackathons. Clearly this skews towards the East Coast. A lot of people from Berkeley/Stanford and also Southern CA schools like UCLA/USC don't go to these because of the hassle of flying out, missing class, being exhausted (after a red-eye), etc. Even if your flight is paid for (which is what PennApps did for my ticket). Whereas you're going to see much higher numbers for East Coast schools that are near these hackathons.<p>On the flip side, since I'm at Berkeley, I can just take a 30 min. BART ride to SF if I want to go to a hackathon. It's interesting that the collegiate hackathons tend to be on the East Coast, but lot's of startup/business related ones crop up on the West.