(...)
warezbunny = warez user
(...)
Looks like the meaning of "warezbuny" has changed completely.
Some time ago there was a drawing (made by Michael Schwarz, afaik) which showed a guy in a bunny costume stunning a warez-user.
So the warez-bunny back then was someone who punishes the warez users. (at least thats how I understood it)
But looks like those were the old days ... guess I'm getting old here