iPod is a great success story. It has changed the way people listened to music, specially in the times of internet where everything was supposedly free. It almost saved the music industry.
there are many other ways a iPod is used. One of them is in training and e learning (or m learning / iLearning..). Seeing the popularity of it among students it was not a bad idea to position it as a learning tool. See the apple education site and how iPod and related products fit into this category.