It's true of other portable electronics and it applies here, too: if you own an e-reader, there's a strong argument to be made that you need a case. Sure, readers are a little more scratch-resistant than smartphones, but a little bit of backpack trauma can do some nasty things to an e-ink display. That could be Amazon's elevator pitch, anyway. Introduced at the company's launch event last week, the Kindle Lighted Leather Cover comes in various sizes, with versions for the Kindle Touch and
