@bSan420 I thought about doing this weeks ago, but I kinda gave up on being a trader and started mining iron again.
I think either a thread or a category would be fine, as long as people don't spam it. We could determine people to post only items and prices but nothing else (no conversations or bargain).
Making a post format would also be ok, to keep standards.
that's why i would keep peoples names and active trades at the top, because we're not gonna be able to stop the chat :P