This might have something to do with geology. I mean, you're on the helicopter, or the train, and you want to write something. Right now, I'm playing with the old eeepc 700, which my son doesn't use anymore. It really is hopeless to type on. Most netbooks have migrated back up to the more expensive laptop, by being bigger and more powerful.
I want my Open-Berry net-booklet that I designed in an earlier blog. The minimal typing can be done with thumbs.