I cannot officially endorse such behavior:

Jonah-
Hi. For several weeks I have been more than a little tempted to place
a copy of your book over Keith Olbermann’s at a nearby Borders. Well,
today temptation triumphed. While I’m a bit embarassed as a middle-aged
father of two to have done something so silly, I still found it quite
gratifying.
Keep up the great work!