I remember sometime in July 2016 when I was 1st introduced to MMM Nigeria where you get 30% extra on your money monthly. Before then I had looked at it and what bothered me was the warning of the website which says to only invest your spare money. It became real when someone close to me put in N1m. I joined and it was so good. I will post my experience soon
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Recently I have just been introduced to MMM United where you earn 100% (or double ) of your money within 30days.

The difference is that MMM united is international and you invest with a Cryptocurrency, Bitcoin.  See my post on understanding and profiting from Cryptocurrencies.