This is an idea i've thought about

[.L.T.]

it would :p And when you entered they give you 50 coins to spend to win more coins. that would rock. ;]

If u were given coins at the start then u could swap them for prizes, but u had to buy the coins with credits. e.g. 5 coins = 1 credit
It would be fun!

[jesus]

Then you can cash in at the end =] Good idea.