Kindle, meet nook. Hey, Kindle, nook's got a color touchscreen. End of story. Okay, not really. We know Kindle's got a huge head start with this whole e-reader thing, but ye olde venerable bookseller Barnes & Noble has suddenly taken an outsized leap into the 21st century with their entry into this suddenly very competitive market. The nook eBook Reader ($259, available for pre-order) has piled on the features, from the color screen to 3G and Wi-Fi connections to not one, but two screens. You can also share books with your friends (even those sad ones without nooks). We're not sure about this all lower-case business, but then again it worked for e.e. cummings.