The bingo bonus structure has one great side effect though. Whenever players don't redeem their bonus points. When they take a hit to their bonus for redeeming cash, let their bonus money expire, or cash it in on other promotions -- they decrease the bonus money in play which makes all other money in play - bonus or real - more valuable. Big winners take their bonus out of play and that gives everyone else a higher effective payout per card. Of course the true payout never changes. The net effect is a slight increase in the odds that there will be more winners dipping into the actual payouts.