Barnes & Noble is throwing its considerable weight around and getting into the still somewhat niche e-reader game. With the Nook, e-readers have a chance to hit a mainstream demographic like never before. Running Google's Android operating system, and boasting dual screens -- one E ink for reading and the other a color, touchscreen capacitive affair -- can the Nook be the e-reader for the masses? This is the place for the whole story, as it develops.