Miller hunting down people who use fake email addresses

A recent post at Boing Boing is kind of scary. If you once used a throwaway email address to sign up for a contest on the Miller website, you might get this email:

Thank you for being a loyal consumer of Miller Brewing Company. As one of our VIP consumers, you have likely received email communications from us in the past. Recently, however, we have not been able to deliver email messages to the address you originally supplied. We have performed an electronic change of address to update our records so that we can continue to send you special offers, promotions, and announcements via email.