We pay hourly which reduces the chances of the system getting stuck.
What do you mean? A ponzi scheme is guaranteed to become 'stuck' when the number of suckers drawn into the system isn't enough to pay out the early adopters.
I look forward to the numerous 'umm, the payments have slowed and then stopped, you guys sure it's still working, I haven't got my investment back yet' posts.
Check the blockchain, you always know how much is left in the bitponzi fund.
https://blockchain.info/address/1PoNzi7PGzRyvc9KWYBcaauS3oeJqa5vFgRight now, there's 1.34231128 BTC left to make payments with. If they do it right and wait until it gets wiped out to 0 to stop making payments, a new cycle can begin with fresh deposits. You might be surprised how long a cycle can last.
It's not an investment anyway, it's a gamble. I deposited a little over the 0.005 BTC minimum, if I get in early on the next cycle I might risk a whole half a bitcoin like a couple of depositors have done this cycle.