With nearly a half-trillion-dollars in annual sales and 4,700 U.S. stores, Wal-Mart has been buying online retailers, slashing shipping rates and rolling out new ways for in-store customers to do more of their shopping at Walmart.com and its other websites.
traditional U.S. in-store retailing is growing less than 2% a year,
forcing many retailers to close stores, e-commerce is growing 16%
annually, the research firm eMarketer Inc. reports. E-commerce sales
this year will hit $462 billion and soar to $789 billion by 2021, the
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