The elctronic book readers are getting more and more popular. My wife has the Kindle app for her iphone and loves it. I'm an ink and paper person myself. I tend to get a headache if I stare at ascreen too long. Plus I collect books.
I heard B&N is working on releasing a Nook app for Droids and Blackberries. Knowing that the Nook has a web browser does make it sound nice and convenient for travelling though. I'm going to wait and see what else hits the market in the next year or so.