Heh. My feedback is: hosting bad reviews of lawyers is a good way to get sued.
Doesn't matter if the reviews are factual or truthful; you'll still have the inconvenience of dealing with upset people who have no-cost access to the legal system. It seems to me that unless your plan is "immediately remove any negative content that anyone complains about", you're going to get a lot of lawsuits against you. Do you have a plan for dealing with this?