A strange billboard campaign during which billboards all around Austin, TX displayed "Calvin Coolidge was the 30th President http://www.calvincoolidge.com" in giant black-on-yellow lettering. Upon entering the website (which is still up today) the viewer is informed that they are now part of some sick billboard advertising effectiveness survey. Sad, as most everyone I know was hoping it would turn out to be more obscure, much like the Andre The Giant Has A Posse thing.