This was posted a few months ago. I asked a question then, that I will ask now. How much money does Spotify have to pay the record label? Usually the artist gets most of their money taken by the label.
Record company math is very similar to movie studio math. Both systems are designed to make people very rich, just not the ones actually doing any of the work.
I was more interested in the site itself. As you scrolled to a new article, it changed the URL. Then if you visited that URL in a new tab, it was the new top of the page.
So pick something simple; say a log in page, a content page, and maybe an admin screen. Something that would take about a day by yourself. Then make it with your three friends. Take the time to plan out who does what and learn to work together.
This simple task can save you hours of planning on the day of.
EDIT: I mean for you to do this task before the hackathon.
See here: http://www.salon.com/2000/06/14/love_7/ and here: http://www.techdirt.com/articles/20100712/23482610186.shtml
Record company math is very similar to movie studio math. Both systems are designed to make people very rich, just not the ones actually doing any of the work.