How do you check if the reviews were written honestly, and just to get a reward? Or how do you tell if a review is useful or not?
For example take a look in Exchange section on Curve Finance review. "Its very good" because it is easy to use. Same can be said about almost every exchange. Second exchange that got a review - Coinbase. A review was written by a person that is not a trader. How can this be approved?
You can not, since trust is just a gimmick.
not going to lie I have seen something like this before on
https://revain.org/, at the very beginning even they were encouraging people to write a review about something like an exchange, a platform and etc to get incentive from them and if you compare both of them you should see some similarity which means the review will not be created naturally. at least revain does not highlight trust on their platform.