What's the purpose of locking the titles on sale/trade/deal threads? I have a thread where I sell many lenses and every so often I need to add, remove or edit, and would like to change the title, but will not allow me to do so. (see screenshot below) There should be a rule to close the threads once a deal gets done, or the item is no longer for sale or trade. We often see multi year old threads being bumped by someone asking "is this still available?". It just clogs the exchange with old threads.