This is not to say that I believe that spam is a Good Thing, or that the RBL is a Bad Thing. I hate Spamford for what he has wrought, and I believe that the RBL is a natural and necessary response to it. I do, however, suspect that the trouble that Spamford and his ilk have caused, which has long since been dealt with, is nothing compared to the trouble which has now been assumed by the sysadmins and network operators. As an ISP, I have the right to choose. Power comes with responsibility.
Responsibility carries with it liability.