Some people dig up old threads and reply to them. I find it annoying because I might reply to posts without realizing that they can be severel years old. Let the old threads die and make a new one with a link to the old thread instead if you absolutely need to rekindle it. Or ask a mod to unlock it.
I think that threads that havent't had a post in 6 months should automatically be locked.
I think that threads that havent't had a post in 6 months should automatically be locked.