Dear idiots in this thread: here's your first clue on what Spamhaus is and what it does and does not do:
http://www.spamhaus.org/faq/section/Legal%20Questions
Obviously everyone knows that, just as everyone in prison is innocent, spammers only ever send out 100% legit emails and are punished for it for no reason.
Sadly for spammers, it's not up to spammers to decide what is junk; it's up to the people/service providers who have to receive (and endure the costs of) the shit that spammers spew out.
Good luck with your lawsuits.