You should probably move (bottom-left) this to Scam Accusations.

I've often wondered if they're legit, based on the average cost per faucet claim:
1 number pays $200
2 numbers pay $20
4 numbers pay $2
8 numbers pay $0.20
100 numbers pay $0.02
9886 numbers pay $0.002

I've always wanted to know if they really pay $271.37 on average for 10000 rolls. And if so, why don't they just pay $0.027 for each roll? They'd have the highest paying faucet, while it would cost them the same amount in total.
Because they choose not to pay the average amount for each roll, but made it a jackpot system, cheating would be possible and largely go unnoticed. Especially if they only cheat once every few thousand rolls.

Based on the odds, I would expect one $200 winner for every 2 $20 winners.
I did a (manual) count on pages 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 on Big wins at FreeBitco.in:
I just won $20 at FreeBitco.in! 116 times
I just won $200 at FreeBitco.in! 2 times
I probably miscounted a bit, but let's round it down: winning $200 is 50 times less likely than winning $20, and that makes the difference 25 12.5 times larger than it should be.