Don't recall seeing anyone ask about this yet since the switch... but I used this feature quite a bit with phpBB. It would let you see posts with zero replies. Helped to catch a lot of the spammers but also to cherry pick easy questions or potential problems. Looks like an easy thing to add... just don't know if this is something and Admin can do or if IB has to do it.

http://www.vbulletin.org/forum/showthread.php?t=147317