Not much uptake on my anti-spam plan, so here's another:
Combine Vipul's Razor with lawsuits against spammers
When you get spam, you forward it to a special email address, which aggregates it and keeps your address. When there are enough copies to justify a case, the lawyers track down the spammer and file a class action, using whichever spam laws apply. They disperse the damages back via PayPal, keeping a percentage themselves.