I can see some limited uses for it, mostly for people who don’t uses computers for anything more than entertainment. I’m a big Apple fan, but not all that impressed. Would have been impressed if they would end their ridiculous ban on Flash and had included multi-tasking. Multi-tasking is the big killer. Can’t listen to music while checking your email, or surf the web while composing an email.
You can connect USB devices, but you will need a rather large adapter to do so.