the site relies on client-side javascript being executed correctly... and it seems to not do any checks on the server side. so someone seems to have not taken web design 101.
I just gave myself a balance of 123.456 and there are others with way higher balances, would be really cool if it paid.

There is no way these guys would be abke to maintain a payout of 1 BTC for the 16K square anyways. If 100 visitors gets em a max of like $20. And 1 out of each 100 visitors gets the 1 BTC jackpot, what happens? Exactly.