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Americans are getting more familiar with tablet computers and e-readers, with a new study out today from the?Pew Research Center’s Internet & American Life Project indicating that 29 percent of Americans now own at least one of the gadgets.

Amazon’s push for faster shipping has reshaped the retail industry, with many competitors such as Target and Walmart now offering their own free two-day delivery options. Walmart in May?unveiled?one-day delivery on more than 200,000 items with a minimum order threshold of .

Amazon’s pricing model differs from Netflix’s approach, offering a portion of its catalog for no extra charge to Amazon Prime members (who pay /year for a package that also includes free shipping and Kindle book rentals). Amazon also offers?a la carte?streaming movie and TV show rentals and digital purchases.

Among the 15 first- and second-tier cities surveyed, six cities saw a month-on-month price decline in March and six saw price gains of less than 0.5 percent.

Among recently lost-and-found records are those from a controversial 2004-06 deployment to Iraq. The logs could shed light on whether the dispatch was to a "noncombat" zone as asserted by the government at the time, in line with constitutional limits on military activities abroad.