I'm sure it's been talked about and asked for before, but I just want to bring it up again.  What's the harm in setting the system to lock threads with no new posts in the last 30 days? 
For instance:
Original Post
hey u call me a noob twin tail u ought to be abkle to take the pain  
Last real reply
I mean I don't see what the problem is we all have a abkle humbker every now and then.  
Reply that bumped it to today
I MEANT TO SAY ABLE 
A totally unecessary bump of a totally useless thread.  Auto-lock of stale threads would have saved us from useless crap like this.