The title of this thread made me think horrible things.
Why? Does it have to do with the Necromancer?
Anyway, there is no rule here, but I wouldn't bump a thread that hasn't been posted in for a few months. I would advise no one to post in threads that have been dead for over a year. btw, most of us acted like dorks, failures or just abnormal sometime in our life. And we might have acted like that while posting on these forums. And no one likes it when someone digs through their old posts and reminds everybody how much that he/she used to spam.
So in some cases, if it is REALLY old, a new thread should be made. In some cases, it is okay to bump.