I was watching a missionary report the other day and it seems the market has already beaten this project to the punch to some degree. Since electricity is unreliable many buy and use the pda like cell phones and web apps are designed around this usage. So it will be interesting to see if they make the switch from a Crackjack like cell phone to one of these laptops.
These present several major advantages over PDA’s
1) The Network with other units easily
2) Hand Crank Power
3) More Power