Barnes & Noble’s e-reader is finally here: Behold the Nook and its dual screens. Pretty! At $259, it’s on pace with Kindle, and it uses a color touch screen at the bottom instead of Kindle’s keypad. Best sellers and new releases are $9.99, but the big change — and what distinguishes the Nook from its e-brethren — seems to be that you can “lend” your e-books to your friends for up to 14 days. Not just Nook-to-Nook, either: According to the site, Nookies will be able to “lend to and from any iPhone, iPod touch, BlackBerry, PC, or Mac, with the free Barnes and Noble eReader software downloaded on it.” That’s a horse of a different color.

Does sharing mean caring you’d opt for a Nook over its competitors, PopWatchers?