Quite a few people have suggested encouraging people to return all unwanted junk mail to the sender as a way of stopping unwanted mail / taking revenge. Although it's already one of the tips in the Guide to Stamping Out Junk Mail (
www.stopjunkmail.org.uk/guide/return_to_sender.php) it's worth considering setting up a campaign.
My personal impression is that although many people like the idea of 'organised return to sender' few people are prepared to take action. Still, there's the potential to solve the junk mail issue once and for all; if enough people would be willing to routinely send all unsolicited junk back to the sender there'd soon be a lot less junk mail. I think any campaign should focus on 'people power' - convincing people that junk mail is an issue that can be solved if only we're willing to take action.
There are lots of creative ways of returning junk mail to the sender. For instance, people could be asked to return their junk on the last day of the month (for maximum impact), or people could be encouraged to send all their junk mail to the Freepost address of a particularly notorious offender (Virgin Media springs to mind). Obviously, there are ethical issues here…
Another issue to consider is that just about all personally addressed junk mail can be stopped (via data protection notices -
www.stopjunkmail.org.uk/guide/contact_sender.php). The return to sender approach is actually more suitable for _unaddressed_ junk mail (which is largely unregulated and of which there's a lot more). Unaddressed junk mail can be returned to the sender - you can stick it in an unstamped envelope, address it to sender, and deposit it in the nearest pillar box. Again, I'm not sure how ethical this is.
I'll contact the handful of people who have suggested the idea to me via e-mail and invite them to join the discussion. If nobody cares to join the idea is probably not worth pursuing…