Always research an ICO properly before investing in it. Some ICOs that have strong team and great projects may give high returns but one need to be careful while choose a good ICO. You need to check various things while investing in ICO such as whether a working product is there or not. Also project behind ICO should have strong team. Website should have all the details. Whitepaper must explain everything. Roadmap should be clear. Also future usage of ICO tokens must be analysed. You need to be careful while investing in ICO. If you invest in a good and strong ICO, you can get good returns. You need to check various things while investing in ICO such as whether a working product is there or not.