Retailers ups its outloo for the year after another strong quarter
                                
                                
                                    (Newser) -
                                    Wal-Mart's second-quarter profits surged 17%, spurred by bargain-hunting shoppers and tax-rebate checks, reports Bloomberg. The world’s largest retailer also revised its full-year estimates upward, while cautioning that rising energy and food costs make the outlook more volatile from week to week. The company said its net income rose to...