They seem biased to me. A friend of mine who's doing an ICO told me that they paid 10ETH for 5 quality ratings and that's that! I noticed that some ICOs with good project, team, and good social media presence are struggling with getting good reviews.
With all that said, should it still be a factor to look at when investing in ICO?
To get a rating that I know is not very easy because in some ICO Web Ratings, it requires several opinions / feedback from trusted users who have experience in the crypto world. maybe another web ICO rating could happen to smooth out the work, but that would be bad for investors