Online sales

Tablets Overtake Smartphones as the Big Shopping Device

Mobile devices account for just 15 percent of e-commerce today, but eMarketer estimates that by 2017, one-fourth of online sales will be mobile-based as people conduct more of their lives on smartphones and tablets.

IBM: Mobile Sales Jump 63%, Social Commerce Slips

With Apple's iPad and iPhone dominating activity, mobile sales on Black Friday hit 16 percent, according to a report from IBM, representing 63 percent growth compared to 2011.