I had a think about this issue tonight.
And I feel there is a limit to doing things as a whole group, and having "No Junk Mail" for EVERYBODY, is crossing that limit.

I will be putting an individual "No Junk Mail" sticker on my mailbox, and am happy to buy a few extra stickers for those who want it on a first come first get basis.
Will go sticker shopping tomorrow.

Regards
Min