Websites should go ahead and change the “Place Order” button to read, “Place Order and Please Let Me Know About Your Products Via Email Every 2-3 Days In The Desperate Hope That We’ll Wear You Down and You’ll Purchase Something From Us. (Also, This Button Overrides Unchecking the Opt-In Checkbox You See Above Because It’s, Like, Way Bigger.)”

That is probably too difficult to fit on the page, I’m guessing.