Hoping to power through your reading backlog this Thanksgiving weekend? You may be interested in Barnes & Nobles' newest Nook tablet, which comes out this Black Friday for an equally frugal cost of $49.99.The Android-powered 7" Nook Tablet, set to debut November 25,  features a  1024 x 600 IPS display, 2MP front and 5MP rear cameras, 8GB of built-in...