dherbman:So, SB is the only source of justice in the world of diving? Kangaroo court adjourns, no defense is necessary, we'll notify the perpetrator after sentencing.
Sorry, but there are very few people I trust enough to use their word alone as a basis to destroy a business. None of those people exist solely as anonymous internet presence.
How did you make that quantum leap? Nobody said anything about judging or convicting. I think it's fair game for someone to say "this is my experience, this is what I saw, this is what happened to me". Happens all the time. You decide for yourself what level of credibility to assign to it.
Example, TripAdvisor allows members to submit reviews, where they might say "I stayed at XYZ hotel last weekend, there were roaches in the room". That's their alleged experience, believe it or not. It would take a LOT of such reviews to destroy anyone's business, if then. And if there are that many bad reports coming in, then unless you believe in mass conspiracies they likely have some basis.
I guess such reviews would be prohibited in your world.
It would be hard to bring a DM into it without bringing the shop as well, if I owned a shop you bet I would try to tune in to what people are saying about me. It's as simple as creating a one-time Google alert.
BTW, truth is an absolute defense to charges of slander/libel.