The hint that I mean is the $250 initial capital in the account. If people want to sell scam robots, they open a large number of fxBook accounts, each one with a very small money amount. Then they let variants of their robot trade on every account. Most will wipe out the account sooner or later, but a few will survive. This has nothing to do with the quality of their robots, it's just statistics. The best account is then advertised as the live result from their robot. Because they opened the accounts with only $250, fxBook gives them a crazy gain rate such as 1700%.

The real annual gain, as you see from the equity curve, is in the 40% range. This is very low profit in relation to the drawdown risk. Anyone trading this robot since 2012 had lost his money. Even simple strategies from the Zorro tutorial can do better than that.

We have looked into a couple of bots, and although it is of course possible for a robots to produce good profit, we found none so far. This might be related to the robot buyer scene.