Bricks and Mortar books: 40% off any book at Borders
Such as? Such as regular discounts sent to you via email (print 'em out, bring em in). Discounts on books, DVDs and other merchandise taken at the register. Also, every purchase you make as a member goes toward your "Borders Bucks," which earn you additional discounts.
Yes, you have to actually drive to a bricks and mortar Borders, Borders Express or Waldenbooks to redeem this and other discounts you'll receive as a member, but think of it as a small price to pay to keep a physical bookstore in business. You could use a little good karma, couldn't you? Hey, at 40% off, it's not bad.