Mobile travel bookings may have started out as a footnote on the balance sheet, but smartphones and tablets are on track to capture nearly one in five online travel dollars by 2014. According to a new report, PhoCusWright's U.S. Mobile Travel Report: Market Sizing and Consumer Trends, U.S. mobile leisure/unmanaged business travel bookings will more than triple from 2012 to 2014, when mobile bookings will reach US$25.8 billion. While using a mobile phone to purchase travel products is not yet mainstream, the share of travelers who have done so is growing. In 2012, three in ten mobile web users booked/purchased travel products such as hotel rooms or flights via their mobile phone, up from 26% in 2011. By comparison, more than eight in ten mobile web users viewed maps/directions via a mobile phone, while over half researched travel destinations or products. "Everyone knows mobile activity is booming, but it's hard for companies to know where they stand when growth rates are so...