Web制作者は変化についていけるか？ 変化についていくべきか？15. “ The Need for a Responsive Retail Experience When it came to online shopping, 14.1% of shoppers preferred using their mobile phones. The most popular device for US consumers — the iPhone, followed by the iPad. Online Black Friday sales shot up 20.7% from last year, mostly from mobile shoppers. 16.3% of mobile sales, mostly from an iPad. 24% of Black Friday retail traffic came from a mobile, w
