I generally find myself hoping people will search relatively recent posts rather than bump/resurrect old ones. I find the resurrected ones annoying, too, particularly since the boards have undergone ownership and rules changes in the last year and a half, which means that resurrected threads older than than that nearly always have to be deleted anyway. They inevitably contain comments, email addresses, insults or some sort of content we come down harder on these days.

If you watch very closely, you'll sometimes notice that threads get re-activated/bumped by people with new identities who posted on the original thread with a different member name that was banned. We've caught several poser-returnees this way and I'm sure will continue to.