Head over here and "like" them on Facebook to gain access to your coupon!
The Fine Print:
"This coupon entitles you to 50% off the List Price of one (1) eligible print Book. At BN.com, if no “List Price” displays on the item’s product page, the discount will be applied to the “Online Price.” If “List Price” displays on the item’s product page and the current “Online Price” is greater than 50% off, then the “Online Price” will be applied. The “Online Price” is the price at Checkout before taxes, shipping and handling charges, and discounts are applied.
This coupon is valid at BN.com from November 2, 2011 at 12:01am to November 7, 2011 at 2:59am Eastern Time, and at Barnes & Noble stores from November 2, 2011 to November 6, 2011 at close of business. "