hmm, I think that it is all a question of the useability.. Not a question of the number of devices. From my point of view a small and simple mobile phone, useabe well for calls and sms on any place for quickest as possible communication.

Additional the Nokia 770 fo control and setup the mobile phone or other devices as central wearable command and information center.

As example, download pictures from the digital camera, for a better prewiew and syncronize or save at the personal file server at home or anywhere.

The 770 has the change to change the way of life when it be simple with the nessesary usebillity in an environment that support the life in a simple kind of useage.

The number of the users will be decide about it.