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?
Yes, most sites often give money to buy a rating, I would certainly not much began to trust, it is better to start to understand the cryptocurrency and ico and then choose yourself
people state there's websites and coins purchasing ratings...where is the proof of it being done?