Auto-Lock threads that have not had a reply in over a month

I hate when new people to the forums go back and find threads from pre-beta to respond to. General Discussion is now flooded with old threads because of bebe.

Necro threads die 60 seconds after you cast the spell, fear not citizen.

Why lock threads? Sometimes new people have new question to an old topic or can give new informations. Even if there is no reply for 1 month...