There's no rest for the weary in retail this year, but at least on Christmas Day most of the shopping frenzy was online and not in line. IBM's Smarter Commerce unit, which tracks 500 online stores (but not Amazon, the largest, and probably not Apple's store either) told the AP that Christmas Day online shopping increased by 16.4 percent year over year.
It's not clear if that number represents the number of individual transactions or of unique purchasers, but IBM did say that the dollar amount of online purchases made via mobile devices was up a whopping 172.9 percent over last year. Moreover, IBM ex
