Another interesting post has emerged on Worldchanging - about how mobile technologies are being used in the 'leapfrog nations' - here is an extract:
"One of the reasons why mobile phone technology is so appealing to the leapfrog nations is that it's far less expensive and time-consuming to erect cellular towers than it is to pull miles of copper or fiber optic wire. But what if there was a solution that would be even cheaper and faster? Arizona-based Space Data and North Dakota's Extend America have developed a system using inexpensive balloons with cellular routers to provide wide-area coverage of sparsely-populated areas. North Dakota is set to be the test site for the system, which will use three balloons to provide coverage equivalent to 1,100 cellular towers. The balloons, once launched, would rise to a height of 20 miles, well above flight paths and transient weather conditions."