Probably, investing on such websites is very risky because they could become a scam at any time. That is why it is very important and necessary to learn proper skills and venture into proper businesses instead of making some investments that are risky online.This is one of the main reasons why I never invest money online and i never trust HYIP sites at all. There are a few Hyip sites that have been paying for a long period, but they could also become a scam.