Thread:Sannse/@comment-5453208-20140302203052/@comment-3247345-20140304034854

Staff told you to ban them on your wiki, which you did. They didn't tell anyone they had to be banned anywhere else. That's generally for the admins on each wiki to decide. Some wikis do indeed ban ban users for misbehavior elsewhere, but not all do. In fact, I've had a staff member tell me they advise not banning for offenses elsewhere as they don't like local drama spreading. If you feel they should be banned on all wikis, use Special:Contact/general to submit proof they've engaged in behavior that warrants such action. Ban evasion is also something you'd report to staff.