How is high the risk to lose money?
Risk is approximately high. No matter is it HYIP-pyramid or real HYIP. In the first one, all depends on popularity of the project and inflow of new investors. In - second, on successful activity of the HYIP. Even real trade on Forex or game in poker, there are losses and failures that can lead to closing of the investment project. Despite risks, HYIP industry every year become more popular.