Flying less-than-friendly skies. The bankruptcy-plagued airline industry is finally turning to its customers’ personal information as a source of potential revenue. Airlines are late to the customer-data-mining party because, compared to traditional retailers, airlines need to track their patrons over a much longer time period to get a sense of their spending habits (most people purchase plane tickets a lot less frequently than they buy, for example, coffee). But, faced with ticket prices that barely cover costs, airlines are turning to tech-savvy global distribution service companies for several years’ worth of a customer’s transactions and information gleaned from patrons’ social media profiles and interactions. The airlines hope the information will allow them to deliver more targeted offers to air travelers, but—for frequent flyers—it poses yet another privacy concern. As if turbulence weren’t enough to worry about?