The site allows anyone to write a review of any vendor without any verification of the facts. However, the vendor cannot flag reviews as inappropriate or dishonest without paying them for that right. Even when there is a privacy violation (by calling out employees by name) or bullying of those employees, there is nothing you can do until you pay.
My company has done many hundreds of thousands of successful transactions over the last few years and we have 75 bad reviews on this site. We look like a horrible company there because I have refused to pay the $10k+ per month they want to make us look better.
How is this legal?!