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.