Everybody is assuming their are not actually mining...
Average ROI time people is claiming to get is around 20 weeks that means (with round numbers) that youre getting a 5% of your investment back every week.
If they lend your money at some margin trading website they can get a 2.5% out of it every week...
So after 5 months you will have your money back and the will earn a 30% ... yes, the still will have to pay you some pocket money for the next 4 and a half years.... but did you hear of anyone getting a 30% profit here?
Its sustainable? probably... risky? yes... but getting a 30% out of other people investment... definetely sound like a good business to me...
And btw, I have some money put there and in other websites, but I will not damage my credibility posting referral links
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)