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?
OK, the 24-hour limit is now in place in the sections that people mentioned.
Recently, I was checking the Patrol page and caught a user using two accounts and a self-moderated thread to bypass that system.
1. The first account creates a self-moderated thread. 2. The second account posts anything in the thread. 3. The author of the thread deletes the post from the user 2. 4. User 2 posts the same thing again. 5. Repeat.