What would you do?

Chayro, I've practiced law for 33 years, so far.

OK, then you know that you don't want to be a defendant in a lawsuit if at all possible. Maybe I'm a bit more risk adverse than you are. Getting sued sucks. They don't teach that in law school.

It is interesting to observe two very different approaches by two lawyers. Not being a lawyer, I can clearly see that both can be combined successfully. You can do things differently depending on the case and the client.
But..I prefer Lloydc's stance overall.

Third view, it doesn't matter if you say factual negative things about an audiogon customer they will punish you or delete the entire thread! Lol

Report it to A'gon and let them investigate it. Then it's on their back.