From my understanding that hackathon is basically just a way to get free tickets to Disrupt. Thus no one takes it seriously and you get things like this.
You can watch here: http://techcrunch.com/events/disrupt-sf-hackathon-2013/live-...
2) Most people (including myself) still took it very seriously (proof all the people who worked 20 hours straight and slept on floors for few minutes).
Sorry for the off topic.