Chris P. Letus doesn’t like burgers, shakes or Spam*. In 2008, Letus received an e-mail inviting him to King Burger to “taste the savory new bacon-loaded steak burger.” Letus immediately replied, “unsubscribe.” Two months later, King Burger sent Letus another e-mail about the bacon-loaded steak burger boasting about its “irresistible aroma.” Yet another e-mail was