I believe the mark of a UMPC is its ability to be carried and not its size. IMO the mark would be a notepad, being a writer I can find myself carrying them arou

I believe the mark of a UMPC is its ability to be carried and not its size. IMO the mark would be a notepad, being a writer I can find myself carrying them around when I'm going nomad (either by choice or by force: air travel) and find a writing folder to fit the needs of 'ultra-mobile' useage. If a UMPC can fit in the same size and weight ranges as a writing portfolio then it will be infinitely more accessible than any netbook. I've travelled for days carrying my writing portfolio's by hand, and I've never felt the need to put them down and due to the dimensions and weight I can frequently have usage of both hands (sticking the portfolio under the armpit) or often both arms (by sticking it down the pants, not exactly classy and certainly not for use in business meetings, but it works).