Every investor should be wary of claims of receiving an unusually high and fast return on investment. Some scams claim 1-2 percent of daily earnings or 100 percent monthly earnings. Obviously, too-good-to-be-true, but it hypnotizes the greedy into irrational thinking. The reality is that all or most of the returns on investment are being paid from new investors money (i.e. Ponzi scheme), that always collapse eventually.