Just don't invest to any suspicious(ICO) investment that you are seeing nowadays except buying and trading on exchanges or investing to casino's bankroll's. Those ICO rating sites can't be trust too, they are offering paid review.

So what if you fall to an ICO that just paid good reviews, whether to those ICO rating sites, blogs, mediums and other sites that they can publish their ICO. This is happening so it's not enough to trust those rating sites.