yes that's true, you have to be careful with every site on the Internet, there are many that do not exist and you do not know what they do with your money. It is always better that you have a personal contact and can reach the person when necessary.
There are good investments if you get to the right person, it can mean a lot to you. If you have a good investment manager, he makes good income for you and build your confidence. What is important now is make an appointment with the person you invest with and invest in the short term so you have everything in hand. Currently I invest in the short term because the markets are not stable.
I worked for years for a private millionaire, I gained a lot of money for him, but the pressure was too high to make more and more why I started myself. If you want to work doing good you should not have any pressure.
Then you have the best results.