Surely 4 is impossible. Email is both consumption and production. Listening to music is just consumption. By the crudest estimate, that means that any email device must have an interface that is twice as complicated as an ipod.
The jokey 7 Reminds me of the time I hitched a lift with a drunk driver, because I concluded that it was safer to be in his car, than walking along the road with all the drunk drivers about. Such a device actually sounds quite dangerous - I'd rather have someone driving towards me talking happily on their 'phone, than looking at it in confusion trying to see how many bars they have.
The jokey 7 Reminds me of the time I hitched a lift with a drunk driver, because I concluded that it was safer to be in his car, than walking along the road with all the drunk drivers about. Such a device actually sounds quite dangerous - I'd rather have someone driving towards me talking happily on their 'phone, than looking at it in confusion trying to see how many bars they have.