Greed is indeed an unkind trait. People who have benefited, often can not resist and lusting to get more. It is certainly going to be easily interested in a project that gives a big advantage. Though with unrealistic destination projects often end up failing or expressed as a fraud.
And people who have no knowledge of the project is of course at risk. When choosing an ICO project, we should check carefully.
For me in this online world, don't be easy to trust with others. If you want to invest, try checking out other investors in the ICO. If you have done a good check, you can invest your money.