Late last week Wal-Mart announced that it will no longer sell the Amazon Kindle and Kinde Fire in its stores, joining Target in in rejecting the devices. While the argument could be made that the razor-thin margins on those products contributed to that decision, the real reason is clearer: Amazon’s tablets are a gateway to easy ordering from Amazon.com, which means fewer sales for Target and Wal-Mart. Proof of that is the fact that Wal-Mart is still selling the iPad, the Nook, and the Google Nexus 7, amongst other tablets. Read the full story at ZDNet.