When i search i found ICO projects with very good rating, this rating posted buy ICO rating websites, how this rating works, websites did not mention about the factors use to rate this projects.
in my opinion it's better to do your own research seriously. 3 things that must be investigated before participating in the ICO project are the manager, the development team and the whitepaper. you should do your own research don't rely on rating sites because they are paid by developers to rate good projects with a rating of 5. but actually it's not a good project that's fraud.