Ah-- lawyers using their powers for good. The anti-spam haiku is a short, trademarked phrase that the trademark holder Habeas is granting permission for individuals to use for free. Corporations that comply with their 'no spam' requirement can use it too, for a price. It would be added to the header portion of your e-mail (the delivery instructions-- stuff you usually normally wouldn't see). Being so distinctive, it becomes a snap to use to filter the good e-mails from the spam. Then all we have to worry about is spam from countries that don't abide by international copyright law.