La fiebre del 'Black Friday'

Shoppers wait in line to pay for their purchases at the Walmart in the Crenshaw district of Los Angeles on Black Friday, November 29, 2013. US stocks Friday moved higher in a holiday-shortened session following better eurozone economic data and positive early assessments of "Black Friday" shopping traffic by some leading retailers. AFP PHOTO / Robyn Beck

A young shopper carries large toys towards the check-out register on Black Friday, seen here on Thursday November 28, 2013, at the Toys-R-Us store in Fairfax, Virginia. More than a dozen US retailers opened their doors to shoppers one day ahead of the famed-Black Friday shopping day. AFP PHOTO/Paul J. Richards

PAN04 - CIUDAD DE PANAMÁ (PANAMÁ) 29/11/13.- Decenas de personas realizan compras hoy, viernes 29 de noviembre de 2013, en un centro comercial en Ciudad de Panamá (Panamá). Los panameños se volcaron hoy en masa a los centros comerciales de la capital para aprovechar las ofertas de hasta el 70 % de descuento por el "black friday" o viernes negro, con una concurrencia sin precedentes desde que hace unos tres años se implementó esta jornada de descuentos de origen estadounidense. EFE/Alejandro Bolívar

TROY, MI - NOVEMBER 29: A man tries on sunglasses at a retail shop offering Black Friday deals at Somerset Collection shopping mall on November 29, 2013 in Troy, Michigan. Black Friday is one of the busiest shopping days of the year, where retailers offer discounted merchandise. Joshua Lott/Getty Images/AFP== FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==

TROY, MI - NOVEMBER 29: Shoppers ride an escalator as they shop for Black Friday deals at Somerset Collection shopping mall on November 29, 2013 in Troy, Michigan. Black Friday is one of the busiest shopping days of the year, where retailers offer discounted merchandise. Joshua Lott/Getty Images/AFP== FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==

NAPLES, FL - NOVEMBER 29: Black Friday shoppers looks for deals at a Best Buy store which opened its doors at 6pm on Thanksgiving Day this year on November 29, 2013 in Naples, Florida. One of the busiest days in the calendar for retailers, over a dozen US stores opened their doors to shoppers one day ahead of the famed-Black Friday shopping day. Spencer Platt/Getty Images/AFP== FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==

NEW YORK, NY - NOVEMBER 28: Customers walks outside Macy's Herald Square after the store opened its doors at 8 pm Thanksgiving day on November 28, 2013 in New York City. Black Friday shopping began early again this year with most major retailers opening their doors on Thanksgiving day. Kena Betancur/Getty Images/AFP== FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==

TROY, MI - NOVEMBER 28: A customer loads televisions into the trunk of a vehicle after shopping at Wal-Mart Thanksgiving day on November 28, 2013 in Troy, Michigan. Black Friday shopping began early this year with most major retailers opening their doors on Thanksgiving day as consumers took advantage of discounted prices to prepare for the holiday season. Joshua Lott/Getty Images/AFP== FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==

People wait in lines outside the Best Buy store in Burbank, California for the store to open on Thanksgiving Day, November 28, 2013. More than a dozen US retailers will open their doors to shoppers one day ahead of the famed-Black Friday shopping day. AFP PHOTO / Robyn Beck

(FILES): This November 24, 2011 file photo shows people standing in line outside Macy's department store in New York awaiting the midnight opening to begin the "Black Friday" shopping weekend. Black Friday, the pinnacle of the US shopping year, comes on a Thursday this year. And even earlier. Desperate for consumer bucks, US chain stores, some fighting for survival, are upping the ante this holiday shopping season with cutthroat discounts offered earlier than ever, and ever-longer opening hours. Giants like Walmart, Target and Best Buy, and online goliath Amazon, are squaring off with deals launched a week before traditional start of the Thanksgiving-Christmas shopping season. AFP PHOTO / Files / Stan HONDA