Mike - please correct me if I'm wrong regarding this scenario: teafor2 creates an initial post on January 1, 2012. He adds to that post by means of editing, throughout the year. In the meantime several hundred new posts are added to that board. What happens to teafor2's post? It drops to page 4 or 5 or worse, never to be seen again. Is that fair to teafor2? The boards were not designed to let edits float back to the top of the list.
You indicate that your premise for this request is that you have some heavy-traffic boards that are being affected. Please list five boards where teafor2 has made more than 50 posts in a day.