For some retailers, Wal-Mart's black list could become a useful resource.

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Give these people the day off that they deserve, " said another person who signed the petition " Wal-Mart: Move Black Friday Start Back to Friday.

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The consumer battle is so significant to most big box retailers such as Wal-Mart that unions target Black Friday to rival their interests.

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Wal-Mart is counting on strong Black Friday sales in order to meet earnings expectations for the year.

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Retailers like Wal-Mart and Nordstrom also benefited from recent Black Friday sales and are set to capitalize on the holiday season.

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Its closest competitor in terms of visits on Thanksgiving, Wal-Mart, witnessed a decline of almost 25% on Black Friday while Amazon saw traffic grow by 15%.

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Outside Wal-Mart, Carrefour, Coto, Jumbo, and Disco stores, black market sellers will offer customers goods at much higher prices.

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