I'm still in favour of this idea:
Interpol (or whatever) sends out a load of fake spam messages containing the obligatory link. Gullible fools click the link and fill in their address etc. -- next day Interpol goes round to a few Gullible fools' houses and rip out the phone line. The Press makes a big hoo-hah about it, and scares others from doing the same.
Result = fewer people responding to spam, therefore less spam. I hope. Or am I just dreaming again?