The Kindle DX never quite took off the way Amazon was intending. While a 10-inch e-reader certainly sounded good in theory -- especially for the broadsheet addicts out there -- it was too unwieldy and expensive for mass market appeal. While Amazon has continued to sell the device, and recently at a steep discount, it has been left out of every upgrade cycle since mid-2010. Now, after just three short years, it appears that Amazon has quietly killed the super-sized line. The retailer
