I'm interested in getting MM for college next year, mostly to automatically back-up files that I am working on. The college offers other services (with a whopping 1Gig of storage space!), but they seem clunky, and I imagine MobileMe would be better. However, I am having a hell of a time finding any mention of automatic backup, here or on Apples site. It's all about email/contacts/cal etc. It would be good enough for me to just have a single folder that backed up automatically on a schedule or whenever prompted. Is this possible? Also, why is MM only $60 on Amazon, and $100 from the Apple store? This seems very un-Apple to me. Is there some sort of catch that I'm not seeing?