I don't understand why PONZI are allowed since later on they will rip off some people.
So why they'r allowed and related to gambling ? Because you are able to lose $ ?
Well, this discussion has happened multiple times.
Ponzis are usually get rich quick schemes, and usually involve a factor of gamble, as if you are the last depositor then you probably don't get paid.
So that is the reason, why they are in the gambling section. However most of the ponzis are scam, and are not good for the forum or bitcoin.