That is why the XO's desktop page shows a graphic map of WiFi signals up to 2 kilometers away, allowing all the XO laptops in a village to share drawings, notes, photographs, and musical compositions. The mesh of laptops could also share a single Internet connection, allowing them to use a distant ISP or a single schoolhouse server.
Having some minor experience in dealing with third world countries and starving children, I fear that the drug lords, and rebels that run these places, would not like this idea, and would be inclined to do damage and stop something like this.