While you are probably right about this being immoral and maybe illegal, I've had to clean up my share of xrumerservice.org spam from forums and can tell you that I'm no longer against immoral practices if they hit this specific guy. The amount of other peoples time this guy wastes is probably several life-times every fucking day. I think you have to be a forum admin to understand the deep, deep urge that can build up to hit this particular spammer as hard as possible and not even caring anymore if that will get yourself in legal troubles.