You could add a clause: "If your email address contains the string "a3w" it will be immediately forgotten." :)

I think if[1] I ever had a website, and if[2] I had advertising I would choose one advertiser per month, display a static image at the top of each page, and clicking on it would take you to a static page on an advertiser's website. and it would have a privacy policy like your good example

[1] big if

[2] bigger if