How about adding that warning to "abuse"-protted mobs.
From now on the monsters that have anti abuse on will:
Blink in bright red.
Hoot and holler 'ANTI ABUSE ANTI ABUSE ..'
send you bat email.
send you rl email.
send you rl mail.
tell you.
post a news article about anti-abuse tune and the possible ways you could
detect it.
some will aslo keep press conferences and transmit special tv broadcasts about
the subject.