Turn the tables on spam bots. I suggest that everyone does a WHOIS for the domains spammed by those annoying bots, ring up the registrant and tell them how you appreciate their spam. I would do it but it would be an expensive international call for me. If everyone does this it may make them think twice about spamming. You can go here to do a WHOIS. You should get a name, address and telephone number. If the information is missing you can call the registrar and get the domain revoked (providing correct contact information is a requirement).