It's a little annoying to see entrepreneurs and startup folks shoved into hackathons--I kind of prefer the notion of a pure technical hackathon where you're just playing with ideas, or finishing up side projects. Dealing with biz on the side, or decks or whatever, just kind of cheapens it for me.
Not really. All of the advice is very generic without any causal links between winning or losing a hackathon. It's mostly an advertisement for Rails and upsell for the service.
Additionally, it appears that someone is rigging the votes to this HN submission.