It's shaping up to be quite the holiday season for tablet shoppers. First the iPad, then the Fire, and now the Nook Tablet ($250). Aimed squarely at consumers of books, magazines, video, and other media, the Nook Tablet sports a dual 1GHz processor, 1GB of RAM, a seven-inch VividView touchscreen, 16GB of memory, Netflix, Hulu Plus, and Pandora pre-loaded, Wi-Fi for downloading more Android apps, a rechargeable battery good for up to 11.5 hours of reading, and, of course, a funky open loop in the bottom corner for attaching a carabiner. Oh, that's not what it's for? Why is it there, then?