BuddyPress.org

FYI, Ban Hammer doesn’t work on WPMU 3.0 right now which … I don’t plan on fixing, since WPMU has a built-in ban filter. The problem is that BuddyPress is ignoring the built-in Ban Filter of WPMU. I’ve never tested it on WPMU 2.9.x

Ban Hammer works fine on a single install of WP 3.0, though.

See https://trac.buddypress.org/ticket/2277 for the Banned domains filtering issue with BuddyPress