Investing in ICO need to be done carefully. It is very difficult to find good ICO. You need to be careful while investing in ICO. There is no regulatory body who can control ICOs so it's your duty to analyze and research an ICO properly before investing in it. You need to check various things while investing in ICO such as whether a working product is there or not. Before investing in any ICO, I look for many points. A working product or prototype must be there, project should have strong team, website should have all the details, whitepaper and roadmap should be clear. I also believe that ICO should have good rating on different ICO rating websites. After checking all these points, I invest a small amount in ICO.