Rikomagic MK802 III review I was lucky enough to be gifted with an Android PC on a USB stick this Christmas: the Rikomagic MK802 III model, latest in a series from one of the originators of this category, although there are plenty of other makers and models now. And though it's obviously not something you can carry around to read e-books off, like a tablet or phone, it has surprising potential as an e-reading device, most of all for the educational market. As the Rikomagic website explains, once this super-tiny, pocket-sized PC is up and running, "it's a bit like turning your TV into a...