Recently ShopperTrak reported that during the post-Black Friday week, retail foot traffic increased 3.7% over last year. Larger chains like Wal-Mart, Target and Meijer have done an excellent job this holiday season combining their brick-and-mortar stores, online, and mobile channels into a seamless customer shopping experience. Other retailers with weak multi-channel communications and commerce strategies are experiencing a bit of coal in their stocking. These channel....