Ever heard of the term "nettop"? We just changed our P4 PCs to Intel Atom (check in my my thread)
because they are more efficient. They are smaller, but still desktops.
(or to anything else's).
I doubt if an iPhone can serve 100+ users with mail, storage, database,
and other stuff. (If it can, I will throw out my servers)
comes handy when you are on a ladder), a notebook for general stuff,
and a desktop at home for gaming and as a htpc.
about real usefulness. If you give me a smartphone with capacitive
touchscreen, camera with HQ video recording, can survive a 5m fall and water,
I will buy another that, now my HTC ruins are enough
Back to the thread, I think we've got better phones for navigation then iPhone