Maybe that's the term now ... they've been calling it Coventry for a decade at least at AI. I can tell you how I know... but then I'd fear Coventry myself ;-)
VBulletin’s global ignore function is named Tachy Goes to Coventry in the administrator control panel. It’s been around for a long time and is useful for those members who refuse to constructively contribute to the community.
Tachy Goes to Coventry? - vBulletin Community Forum