Being a site owner, frankly I would be very happy if I got money that covers the costs of running the server.
What do you guys think the best way is to make money with a challenge site?
I have seen sites asking for donations, but I don't think that is effective enough.
My other idea is that a user can buy the next level for real money (gekko is a linear game, so that would work). If someone buys a level he doesn't get access to the solution and forum page, so he can still work on the old level too, but he gets a new problem description. Buying a new level would not count in the stats, no points for that and no higher ranking on wechall.
What do you think about this? Would you pay in a system like this? If so, how much? 1$ 2$ 5$?