I know, but the statements there must always end up being true or false, either you win or lose. I'm suggesting a different system, simple example:
Guess the price on June 10:
user A says $100,
user B says $150,
user C says $200.
On June 10, the price is $100. User C wins nothing and his bet is distributed between A and B; user A takes 100% of B's bet.
So it's something between betsofbitcoin and financial positioning. I think it might be fun.