No Junk Mail

Here's what I discovered while hunting around for a No Junk Mail sign.

The Canadian Marketing Association (CMA) has a central registry to stop some unwanted addressed advertisements. It's not clear if you need to periodically renew your registration.
cornerstonewebmedia.com/cma/submit.asp

The Canadian Government has a national Do Not Call List to reduce telemarketer calls. Your registration will last for five years, after which you must re-submit your number.
www.lnnte-dncl.gc.ca/insnum-regnum-eng

The City of Ottawa has an Admail Reduciton By-Law that prohibits distribution of unaddressed advertising material. All you have to do is post this sign on your mailbox. You can buy it for $2.00 at any of the seven client service centres, such as 580 Terry Fox Drive which is open 8:30-5:00 monday-friday. It comes to $2.26 with tax, and you're required to sign and address a form that is witnessed by the city. The sticker itself has a white background, unlike the gif above.

They gave me a pamphlet that contains more information than the above URL. It says that Canada Post is exempt. It also says that the admail distributors local to Ottawa are Flyer Force (742-7782) and Sun Distribution (739-7200). If posting the sign doesn't work, you're supposed to contact the distributors. If that doesn't work, you're supposed to "call the City of Ottawa Call Centre at 580-2400 and identify, where possible, the name of the distributor or the type of material delivered".