The biggest Ponzi scheme here has been MMM, which has really made most prople richer as it is. There has been a lot of Providing help and Getting help going in so many Whatsapp groups, which is actually done by the group admin. However, thee has been a report of scams going on in the whatsapp, you cant just help the fact that people often get greedy and look for more money.

This process repeats itself until one of the following happens:

1.) The SCAMMER runs out of people to scam (people stop investing money).

2.) People get wise to the fact that it's a scam and the operation is shut down.

Source: http://www.inforeporters.com.ng/the-evil-called-ponzi/