In the end it is us, the investors, that allow them to do so by not doing enough research on forehand.
True, but one has to balance the promised interest rate with research, and research might include small testings of the system.
I mean, for me it is clear that a site that offers 1% return or more daily, would not have much (ïf any) proof of meaning, adresses and contact methods. I somewhat expect that. If a site were to have all that proof, it would be perceived much more secure, and as a result would pay less (he is paying you in trustworthiness, so to speak, so would pay you less in money).
Anonymity is a big sign of a scam, but if you think of it, it is also normal than someone that knows a method to get 1% benefit daily or more wants to remain anonymous. Too much questions, investigation, greedy relatives etc. would fall on that person, even if s/he has the best of intentions.
So I try to research risky sites investing the minimum, making some withdrawals, and investing more progressively. Reviews and payment testimonials from other users also count. I know I have many chances of losing, but also the chances or winning are more.
To sum up:
More revenue=more risks. We are to minimize the risks as much as possible given the situation, but simply some revenues are impossible without risks, and no revenue promise will compensate a very high level of risk.
