I think how I'd prefer to handle it is to prevent deleting posts within 24 hours of posting them, in the problematic sections only. Which sections are problematic?
Goods + child boards, and Services.
OK, the 24-hour limit is now in place in the sections that people mentioned.
I have detected a thread in the Invites and Accounts sub that is removing multiple bumps per day. Today he bumped his thread 4x, and appears to be testing the limits as to how frequently he can bump his thread going from bumping 3x per day on the 20th, and bumping at least that frequently every day since.
Would it be possible to have the invites sub restricted to prevent users from deleting posts similarly to the other problematic sections?
eta: I sent a PM to the offending user bringing the rule to his attention.
edit2: found another thread that has been consistently bumping his thread 3-4x per day for months.
edit3:
@hilariousandco: if you're willing to go after them, I'll gladly improve my script to count how many times a certain account deletes a post. I was even thinking of automating it to search unread posts: in 6 seconds, 12 threads got bumped. Many of those must be bump bots, so my plan is to make a script that takes the last x threads, then checks the last page of each, and reports bump bots when found.
There are other ways to detect bump spam with more precision, even if they is more time between bumps 
Look 
