Here is a interesting, hypothetical situation. What will you do if there is a MLM scam going on and it is in early stage. It is assuring 10% monthly return in bitcoins (of course it has that referral bonus part as well but it is optional, you don't need referral as you are getting 10% on your investment.). B'cause of it's early stage, people are investing happily and getting returns monthly. In short equation of incoming source money > outgoing money. By looking at situation, let's say this scam/scheme will go on two more year. There are some people who rip benefits from these kind of scams/schemes as they invest very early and in large chunk.
Will you invest in such scheme well before it vanishes with bitcoins/money?
That's literally what the Chinese are doing.
There are people making a shit ton of money from MLMs like Mr. Mavrodi's MMM scheme, as well as other "revenue sharing" schemes that seemed to good to be true to an average Joe like me.
But all of these people who are making money are taking money out of innocent, unknowing people.
Worst of all, they are actually promoting that scam to more people so that they get referral commissions.
I wouldn't do it, it's too risky and it's morally wrong.