Without ads, you're either very generous and you're willing to do this loosing money, or you'll have a hard time financing your faucet. Don't expect an Anonymous Ads banner to get you money to pay everyone without having you spending some BTC of your own.
I think you might be right. I am trying to implement a roulette game with near-instant payouts to help offset the deficit... I've run into a bit of a quandary though -- how best to specify which number of the wheel you're betting on through a single transaction? If I go by the transaction amount, one would have to pay quite a bit to have a chance for one of the higher numbered pockets... Any ideas?