I have lost count of the persons that approached me for an investment that obviously was a Ponzi scheme. The promise is the big yield because I would also be earning not only from my recruit but also from the recruit of my recruit. They are called downlines which are actually my victims in that scam. Fortunately I have a policy that when it is too good to be true then most likely it is not true. At least until now I have avoided those scammers.