@larry5729 -- I agree with you that Dealers should disclose that information when posting on this site either in their Username or at the end of each comment (their actual name, company name, address, etc.).
If you had seen this post before it was deleted, the Members who gave valuable information about these "Red Flag" online companies did just what you asked. The original poster's username discloses he is with Verdant Audio, and a member who gave another detailed example of the unauthorized marketing and representation gave his complete name, company name, address, phone number, AND a list of the products represented.
EVERYTHING about the post appeared above board and as far as I could see, was intended as a public service to Members of Audiogon to hopefully keep a Member from losing thousands of dollars to a fraudulent foreign online entity. Why the post would be shut down and deleted is freaking mind boggling to me, although there was one Member who repeatedly voiced objections to the post...even when every complaint was met with a response providing evidence that shot down the objection. And the original poster wasn't the only one providing evidence. As mentioned in the replies above, the shut down and deletion is eyebrow raising and makes one question the so called "Forum Discussion Rules". I'm just glad I'm not the only Member who is puzzled.