Americans' online shopping for Black Friday deals soared to $3 billion during a two-day period beginning on Thanksgiving, with tablets and cell phones used for nearly a quarter of sales, estimates showed Saturday. That marked a 39 percent increase over 2012, according to software maker Adobe, which analyzed 400 million visits on some 2,000 American shopping websites. Early Black Friday sales, which began on Thanksgiving, reached $1.06 billion, up 18 percent from last year, according to Adobe. Technology giant IBM also found similar numbers for overall online sales as it looked at 800 merchant websites.



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