Some important point before investing in an ico, they must have :
- a clear white paper
- a roadmap
- a smart contract
- details of token
- a good team (skills of every member and past experience, sometimes we see some guy with bad past experience...)
- an active communication on social networks
- Read all the review on bitcointalk, reddit, etc.
After that you know how to take a decision ;)
Some website to help you to analyse ico :
https://cryptorated.com/ico-reviews
There is a lot in fact, but do not invest without to know where you 're going!