The problem is obviously with you. I linked to an article on Businesswire.com that discussed B&N's extensive advertising campaign that began in April, and proves you are completely wrong, but you conveniently skipped it or ignored it. Tell you what, I'll past a section of the article so you can't miss it:

30% Off One Item Coupon Details:

For each customer, this coupon can be redeemed only once per billing address online at BN.com.

This coupon is valid at BN.com from December 19, 2011 at 12:01am to December 19, 2011 at 11:59pm Eastern Time.

The 30% discount will be applied to the most expensive eligible item in the order - not the entire purchase - and will be deducted after all other eligible discounts, including (if applicable) the standard Member discount, are applied.

Additional Rules Governing Use of this Coupon: This coupon is (i) not redeemable for cash or cash equivalents (including Gift Cards and eGift Cards); (ii) not valid on past purchases; (iii) not eligible for purchases of the following products and services: Barnes & Noble Memberships, Gift Cards, eGift Cards, gift-wrapping, textbooks, video games, digital content (including but not limited to NOOK Books, magazines, and periodicals), NOOK ® devices and their related accessories, other hardware and electronics, software, products available for pre-order, products from the Rosetta Stone Series, products available for in-store ship-to-home orders, or products marked as not eligible for "coupons or promotional discounts," (iv) not valid on purchases made from third parties accessible from the BN.com website (e.g., used books, PC and video games, etc.); (v) not valid on applicable sales tax or shipping or handling expenses; (vi) may not be combined with any other coupon or promotional discount; and (vii) may not be combined with the Educator program discount. This coupon is not valid at Barnes & Noble retail bookstores or Barnes & Noble College bookstores or websites. Barnes & Noble is not responsible for typographical or pictorial errors. This offer is subject to change or discontinuation without notice; we will, however, honor properly placed orders with valid methods of payment with sufficient funds placed prior to such change or discontinuation. Void where prohibited by law.