From my perspective, the "conversation > pitch" line is key. I love walking around, talking to people, and watching in awe as they excitedly demo their hacks. But it's pretty irritating when everyone tries to sell eachother their apps.<p>For that reason, I’m a fan of the science fair-style expo. It has less incentive for self-aggrandizement compared to onstage presentations. Hackers can be more genuine/playful without that single, high-tension Demo-athon pitch.<p>But then again, I have no idea how difficult science fair-style events are to coordinate. I’ve never organized a hackathon.