Black Friday online sales already up 13 percent; 15 percent purchases made from mobile phones

After an impressive day for online sales on Thanksgiving, Black Friday online shopping appears to be strong as well. According to IBM’s Benchmark service, an ongoing measurement that covers some 500 of the largest online retailers in the U.S., early results today indicate a strong Black Friday with 2012 online sales up 13.1 percent for this same time period over Black Friday 2011. …