Honestly this ponzi scheme of Sergey Mavrodi is so appealing because of it's 20% interest rate for the investment but the risk is very high for your investment not to be returned as there is no guarantee.
Appealing for people who absolutely no idea economics. Everyone with a straight mind and a little bit of knowledge should smell the rotten fish here he is going to get.
We may have to do something to educate people about the potential danger of Ponzi schemes like MMM. All the governments should do something.