Suggestions

[Petie]

Also, deleting all of the old topics would take too much work. It would be much easier to just not Necropost.

That, and it also goes against the concept of a forum to begin with. If you want temporary conversation, you have instant messengers. Generally, threads are supposed to be permanent, even if they are old and no longer posted in. So, I agree - just don't necropost and there's really no problem.