Sure, electronic editions have their advantages. I've never heard of a Nook edition getting caught in the U.S. Postal Service's FSS (Flats Shredding System) or having out-of-register ads. You can embed sound or video, track click-throughs, count how many people saw an article or ad, and do all kinds of other tricks that would make Gutenberg's head spin.
U.S. Postal Service
March 14, 2012