Another pretty good mini pc IMHO is the amazon kindle touch. Leetspete from #inferno helped me get inferno on it (and the graphics will probably work once I get twm on it too) it's supper cheap (the ad supported one costs 75 bucks!) and has a ridicules battery life. The firmware is also open source and there is a tool that let's you boot arbitrary images over usb on it :). I plan to give porting plan9 to that a shot at some point (in my "free time" :S)
--Stephen Wiley swwi...@gmail.com
