FILE-In this Thursday, May 12, 2005, file photo, customers leave Wal-Mart as a machine pushes shopping carts back to the store in Cheektowaga, N.Y. Wal-Mart Stores stores will be phasing out selling Amazon.com's Kindle tablet and e-readers, the world's largest retailer said Thursday, Sept. 20, 2012. (AP Photo/David Duprey, File)