Never pays back...
They take forever to make the payments, and since you can't request an withdrawal before the previous has been completed, either you don't request any withdrwals at all or you wait about 5 years (maybe more, who knows...) for your first big payment!
Also, to show how much they really care about paying, now is some selected people do the job of advertising for them, they are audited (makes me laugh xD) before every other member who is waiting for years and hasn't seen a single penny!
Complete scam!
They pay... But keep their payments as low as possible to keep some members joining the site!
STAY OUT!