You know how in the trade section you can specify whether you're buying or selling? It would be cool if there were another prefix for "Auction" or "Buy it now". Some threads start off as a "Buy it now" and after a few offers, migrate to the "Auction" format. I would prefer more consistency. I think this prefix would help with that. What do you think?
Support, however just thinking it out... people usually do state if its an auction in the first post. Or just include it in the title of the thread. But yeah do that while waiting to see if we get a prefix.