It seems as though there has been a change in the ebooks Barnes and Noble is allowing to be sold in Canada. Up until Nov 2011, I had been able to buy Nook books while in Canada and using a Canadian billing address and credit card. Now, when I try to purchase something, I get a message that I must have a US billing address. Almost all their books seem to have this description: "Items ship to U.S, APO/FPO and U.S. Protectorate addresses." I have even noticed this message on items I have previously been able to purchase. So it appears as though something has changed, but I am not sure what. It is possibly the publishers have pulled the rights for B&N to sell outside of the US. Overall, I am still happy with the Nook, but I now have to buy my books elsewhere. If you were looking for the ability to purchase books directly with your device, and you live in Canada, the Nook is no longer for you.