In the User Preferences, I have unticked the option "Enable Similar Threads Feature". I was assuming that this would get rid of the list of so-called "Related Threads" displayed below the initial post in each thread. It didn't! So, if not the Related Threads list, what have I disabled?
 

I'm going to guess it prevents the forum from searching for similar threads when you start a new thread.
 
 

craigb
I'm going to guess it prevents the forum from searching for similar threads when you start a new thread.

 
Maybe.

I think that is it.