A tough question: standard size? Pocket size? Ultra thin? That will depend on the kind of usage you have and how comfortable you personally are with the selected format. Intel, for example, is heavily promoting the MID – Mobile Internet Device – format that their latest Atom platform enables. Atom is a very small processor that can run the same kind of programs you would run on your desktop (i.e. it is an x86 processor) and that consumes very little allowing computers running regular programs to fit the palm of your hand with wireless internet ca