actually I just put in 0.01 BTC, got back 0.015, put that back in again, and now I have 0.0225. I dare not try again, quite pleased with my USD$7 profit. There is definately something much scammier about it. The # of transactions doesn't increment, and with 150% payout it will die much quicker.
They're not incrementing because all of their HTML is still pointing to ponzi.io's web sockets. All I can see from their address on blockchain is lots of receiving and one sent transaction.