Siagiah wrote:

Yes, we do have the ability to lock a thread.  You should be able to find it when you log in to the co-admin section. 

Problem with locking a thread is that folks get upset that they cannot have the last word.  However, it's doable.
 

It works on Facebook.
Maintains civility.
Plus space gets used up rapidly in what are really stupid arguments.
Save the space for really important stuff. 

That's the stupidest damn thing imaginable.