A number of years back, I signed up for the MGM newsletter as part of a contest entry or something. Every so often, one of the newsletters hit my e-mail box, and I deleted it without reading it. Finally, I decided to save myself the step of manually erasing the unread by unsubscribing to the marketing missive.
I clicked through the unsubscribe link and entered my e-mail address. A thank you page displayed and assured me I would be removed.
Meanwhile, a pop-under displayed:
An invitation to subscribe to the newsletter from which I just unsubscribed.
Those kids at MGM are ever the optimists, ainna?