Amazon.com, Inc.'s Kindle Paperwhite tablet sits on display after a news conference in Santa Monica, California, U.S., on Thursday, Sept. 6, 2012. Amazon.com Inc. is updating the Kindle with a brighter screen more readable with less glare  in daylight and indoors in a bid to stoke consumer demand as Google Inc. and Microsoft Corp. crowd the tablet market with competing devices. Photographer: Patrick Fallon/Bloomberg via Getty Images