i'm sure this has already been said, but i was just thinking, and this makes perfect sense. Apple wants to update the iPod line, so they give away as many 15GB models as they can to reduce stock. this reduces demand for minis, which is good for apple because there isn't very much supply. Then, when they update them and phase out the 15GB model, there won't be any stock left over. everyone wins 😀 lol, i was about to buy an ipod, then i realized they were about to update the line. thats good, but i want an ipod now 🙁
EDIT: I may be slow, but i also realized that 15GB is better than 4GB for Apple...that is 11 more GB that you can DL from the iTMS!!! 😛