I found about Geekcorps today. To quote them: "A US-based, non-profit organization, we place international technical volunteers in developing nations. We contribute to local IT projects while transferring the technical skills needed to keep projects moving after our volunteers have returned home." So if you are a geek, you have at least a month to spare, you want to see the world and contribute to a developing community while doing it, then go and register. It sounds like a great idea for at least part of my sabatical this year!