In this Tuesday, Nov. 13, 2012 photo a worker pulls a line of shopping carts toward a Walmart store in North Kingstown, R.I. Wal-Mart Stores Inc. reported a 9 percent increase in net

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In this Tuesday, Nov. 13, 2012 photo a worker pulls a line of shopping carts toward a Walmart store in North Kingstown, R.I. Wal-Mart Stores Inc. reported a 9 percent increase in net income for the third quarter, but revenue for the world's largest retailer fell below Wall Street forecasts as its low-income shoppers continue to grapple with an uncertain economy. (AP Photo/Steven Senne) less