I proposed an archive section where old and inactive threads can be stored. That way, if someone (as ~d~ has pointed out) wants to revisit the past then they are certainly able to.
This way, the thread will not be deleted, just simply put in a palce where they won't clutter everything up. If the thread is re-vamped or revitalized, then they can simply be moved back to their origanal place until such time as they become unused again.
It may not be the perfect solution for everyone and I know it has upset some people that threads have been moved, but it is not a perfect world and compromises need to be made on everyone's part.
However, just because I have suggested it to Jinn does not mean it will happen. He may (and I do not confess to know what he does or does not want) just decide that deleting these old threads is better. I don't know. It's his site and he has the ultimate choice.
What I do ask is that you don't get upset if you like this idea and it doesn't happen. *sighs* I like being the peace maker but I see the potential for this blowing up in my face. If it does turn into a big arguement (my suggestion that is) I take full responsibility for it.
Anyway, I pm'ed Jinn to give him my idea and I await his answer.