Investing in any ponzi schemes is as good as donating your bitcoins for charity ,except charity doesn't guarantee you returns.You better buy two pizzas with your bitcoins and I think that is a better investment because pizzas have cheese,vegetable,chicken and all sort of stuff which will give strength to your body and make you happy.This seems like a better investment because you can't buy happiness but logically you can.Also,don't invest in ponzis.