Overall more people lose money than the people earning them, and the person with the most profits is always the site owner, so unless you're in that small group of people who profit a little bit by risking their money, you'd be making losses, and that's really not something I'd want to get into.
This is quite true and that's why I don't trust these websites that promise one heaven on earth all in the name of investing with them. They are fake and not real and it is better to run very far away from them than spending all your time and energy investing.