Anti-spam legislation in the United States follows what is called an “opt-out” approach. This means that someone can send a commercial electronic message (CEM) but that message must contain an opt-out or unsubscribe mechanism which the sender must respect if triggered by the recipient. By way of contrast, Canada follows an “opt-in” approach which requires the recipient’s permission before a CEM can be sent. Which legislative approach to spam do you prefer and why?