For me there were a lot of hit & misses when i first joined the board. I encountered quite a few disappointments as I'm sure many others have as well
Eventually with time I have identified a few reviewers who by and large I have found to be honest and accurate. Also doesn't hurt that I seem to have similar tastes as them when it comes to services rendered.
So if I look to see someone outside of my "go-to" list I look for a review from them before I book.