Could the thread tracker function be enhanced to block a thread?
 

Sometimes people get these Huuuuuge threads going about stuff I don't really care about, and would be nicer if I didn't have to scroll past all of it every time.

I know, I'm just being lazy. :)

That's a possibility. Getting the interface useful will be the hard part

Maybe a little "bt" below the "tt"?
 

I guess the real hard part would be to unblock a thread is one so desired. Maybe it could just put it at the bottom until the thread in it's normal position gets pushed off the page.