This year's Black Friday sales may have increased only  slightly over 2009, but  PayPal reported a whopping 27 percent increase in total payment volume.  And, U.S. online sales rose 16 percent on Cyber Monday, topping $1 billion for the first time says Bloomberg.  It is no surprise more shoppers are buying online. What is new is how the shopping experience enabled by smartphones, social media, and other technology  is driving revenue. More...