Suggestion: Auto delete inactive For sale/wanted threads

The For Sale/Wanted subforum has 1,346 threads as of this moment. Most of the items have either been declared as sold but not moved to the SOLD subforum or the status of the item was never updated and the poster is no longer active. That makes the use of the subforum significantly more difficult than it should be.

There are a number of possible ways of solving that, but the one that requires the least moderator work going forward if it is possible would be to have threads automatically expire after a period of inactivity. My thought is 3 months, but the specific period isn't particularly important. If something is still for sale, it isn't unreasonable for the seller to be expected to bump the thread on occasion.

If that level of automation isn't possible or reasonable, I'd suggest deleting every thread that doesn't have a post in 2018. From that point, going through and finding which items have been sold or were posted by someone who is inactive is a much less daunting task.

The same could probably be done with the Seeking Or Soliciting subforum as well, but I suppose those can be a little more open ended.