E-readers may not be good enough for Princeton's hallowed halls, but students and professors at Oklahoma State University seem to have fallen head over heels for their iPads. Last fall, the school introduced the tablets in a handful of lecture halls and classrooms, as part of its iPad Pilot Program. Teachers involved in the study said they benefited from all the educational software available on Apple's App Store, while students appreciated not having to spend their life savings on traditional textbooks. At the end of the pilot program, a full 75-percent of collegians said the iPad "greatly enhanced" their classroom experience, though we're guessing that much of that enhancement came from their newfound ability to check TweetDeck between lecture notes. Opinion was noticeably more divided, however, on the device's value as an e-reader. Some enjoyed having all their books in one place, whereas others were a bit disappointed with the experience, saying they didn