Also, not all reviews are posted. If you have an established history of reviews you're more likely to have one published. Which just reinforces the douche bags ego. I don't read the crap but my daughter does.
We had a recent review where the dude gave us a thumbs down. Out of everything served to that four top he didn't like his T-bone. "he only liked half of the steak and didn't like the rest". Hello! Order the filet! Everything else was good. The kicker is one of the couples at the table were in again the next weekend? After reading the review we figured out who the server was, what night they were in and what table they sat at. Looked up their order, looked at the times each course was fired, checked credit card transaction (20% tip) and reservation. We know who they are. We try and track all of our reviewers.