I don't understand the nature of your complaint. BFT says that discussions about eBay are out-of-bounds for their board, so the topics get removed.

Your suggestion that BFT management is somehow complicit in some sort of "crime" by removing your posts strikes me as absurd.

If you believe that a crime that has been committed (and may be ongoing), it seems to me that the proper response is to contact an appropriate law enforcement agency rather than to make a post on a commercial travel board.

But wouldn't you already know that, if you "work at a large law firm"?