When I lived in Austria, I had ads hanging on my doorknob almost every day. I was amazed at how many I got when I would leave for a week.

US should do same. Make spammers deliver their junk mail themselves, lightens the load on the USPS and creates direct jobs.

Well, I lived in Germany for a long time and had that sticker on my mailbox, but still got them. Though less than anywhere else, so it does scare some, but not all of them.

It's crossed my mind before to start a service that collects junk mail and sends it to the home address of the executives at the junk mail aggregates (there's only a handful of them last I tried to stop receiving junk).

On the one hand it's definitely harassment to find out someone's address just to send them things they don't want for the purposes of changing their behavior. On the other hand, that's their business model.