Hello,
These things usually exist just to rip people off, several big companies of this kind have been taken down for fraud. People have gone to prison for setting these up...
If you're going to buy it anyway there's nothing we can do to stop you, but typically they run for 6-12 months, have a "payment issue", stop paymends then close the company and everything just disappears.
Think about it, if you invest $2000 into this and they are paying out $100 per week or whatever, where does the extra $3100 come from that they are paying out on? Magical tokens on the internet inside some silly system doesn't turn $2000 into $5100+.
Don't do it.