Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
mctrivia: It's more than setting up a website. You have to do all of the coding behind the scenes for the $ part to work. That can be expensive when you are factoring in the amount of time it would take to implement. It's a lot more work than you think - I'm sure Fencer can agree w/ that.
And most of my post was regarding cheating. What makes you think people won't look up the best moves when $ is on the line? I mean, people cheat here when all you're playing for is a win or loss...