Last modified: 2011-11-21 23:21:53 UTC
ADD: Sysop can block from reading (IP, username, username mask).
This is already possible on private wikis with: $wgBlockDisablesLogin = true It's pretty much useless to do this on a public wiki since someone could just log out (and is doubly useless if you've got an ISP that rotates IPs fairly often)
Bogus.