It's a very nice feature in my opinion. Wont take long 2 add it in to XenForo + alot of ppl will apreciate it. One of the pluses - when your forums r overrun by spammers, you can manualy control it if you want. No need 2 install any addon etc. Should be placed within the Admin Control Panel in ?users/list Thank you! Hope you will understand the importance of this feature.