Not sure if we’re talking about the same. It’s clear that one could block reviews from a bad reviewer and e.g. subscribe to another one. But those who game the

Not sure if we’re talking about the same. It’s clear that one could block reviews from a bad reviewer and e.g. subscribe to another one. But those who game the system will promote their own reviewer accounts and drown real useful ones in low karma via botnets, making them non-discoverable for new users. It means money to them, and it doesn’t cost much, so it’s basically free money in doing that for sites which would want to pay for a good position in such system. It’s inevitable and there are tens to hundreds of examples of third-party review sites out there. The loop is fragile by design.