be aware that ponzis are scams. they may payout once but remember 1 out of 10 people profit and most of the time the ponzi owner will take people funds and run. be careful guys and gamble in a casino
Gambling in casino's is a risk too..! I'll suggest to keep your btc in your wallet 
that is a kind of gamble too... 1btc=560$ today next month it may rise to 600-700$ or maybe 400-500$ :p but investing in ponzis is not recommended..! except if i come up with one :p