The move to cut 400 jobs and close 50 stores nationwide was announced alongside Best Buy's Q4 earnings report, which includes action items aimed to trim $800 million in costs by 2015. The closings will no-doubt come along with staffer reductions, some of whom could be transferred to one of 100 Best Buy Mobile "small format stand-alone stores" set to launch next year. While an unfortunate move for some customers and employees, it does show some foresight on behalf of BBY management, who likely recognize a continuing shift to online purchasing, and a greater emphasis on mobile devices, which require significantly smaller showrooms, cost less to ship and could offer greater margins to boot.