Thanks for asking this question and bringing this to the forefront. There are definitely groups out there who are trying to capitalize on this kind of activity. They don't need a case with merit. They just need a case to extort a settlement.
Consumers might think those answers are cop outs but that's both the best answers a Realtors can give (for accuracy and sound advise and also precautions we have to take due to what you are talking about.
Sad part is that all these mentality and behavior are part of what drive the cost up for consumers in a lot of things..