14% of US online shopping traffic on Black Friday came from mobile devices

"The expected explosion of mobile media use during this holiday buying cycle appears to be starting. According to the IBM Smarter Commerce benchmark of online retail activity, mobile platforms were responsible for 14.3% of all online shopping traffic on Black Friday, more than doubling the 5.6% of traffic IBM recorded last year. Perhaps even more impressive, sales from mobile devices reached 9.8% of digital retail transactions, tripling the 3.2% of last year.
The surge in mobile activity was part of an overall 24.3% spike in online spending for the day over last year."

Source:  MediaPost, 27th November 2011