Absolutely, and I completely understand where you're coming from!
For complete transparency, when Panjo first began, there was only a few forums supported in the marketplace (i.e. one Audi, one BMW, and so on). Therefore, it was incredibly rare for a member to be a member of multiple, say BMW, forums that use Panjo.
Now that we support many more communities (i.e. Bimmerforums, Bimmerfest, r3vlimited), it is increasingly more common for members to be members of multiple forums. We're currently working on improving some core marketplace experiences like search, filter, and communication tools as well as increasing overall marketplace security to better protect members. In the meantime, though a mild inconvenience, you always have the option to accept/reject your sales. We really do hope to support multiple forum thread generations soon for our veteran forum members.
Thank you for your patience and for being a great member of the community! Let me know if you have further questions.