Tethering a smartphone to get data on the go is a great way to stay online without lugging around a separate device. However, lugging around a separate device exclusively for the purpose of tethering your phone seems a bit less great, especially when that device must be plugged into a wall. Such is the Nexaria BC2, an 802.11b/g/n router that can be connected to compatible iPhones (namely the 3G, 3GS, and 4). Pop one in and, assuming you're paying AT&T the requisite extra $20 a month, it'll start beaming sweet, sweet internets out to all of your d