They sure do Matt. But then again I don't we will ever see that stop. Look at the lady who burnt her koochie with coffee from McDonalds and made a ton of cash. And then there are where those people sueing the fast food chains because they are obese. One of the guys actually thought 100% beef meant it was healthy.
I think as long as people are constructive with their thoughts and lay out the facts of what happened and what they tried to do and how they were served there shouldn't be a problem. It's when people jump out and yell SNAKE OIL THIS WHATEVER SUCKS is when you are asking for problems. And there are always 2 sides to every story. Basically we just need people to lay out the story of good or bad and let the reader come up with their own conclusions if they want to do business with that company. Maybe just make some detail guidelines and note that anything slanderious will be removed.