DON’T WRITE OFF Barnes & Noble’s Nook (bn.com) as just another e-reader. @is is no thoughtlessly slappedtogether oEering—it’s the bookseller’s attempt to capitalize on all the mistakes it believes Amazon has made with the Kindle, in the form of a better product at the exact same price. In the Nook, all of the things you’d expect—Wi-Fi, an online bookstore, the ability to mark notes—are paired with unusual...