Here are some ideas.

• We recently did a mapping party in Uganda. That was in Kampala. Uganda is much bigger, so you can travel around and show people a bit about GPS & Openstreetmap.
• If you want to code, there is no CDN targetted for Africa, though bandwidth here is insanely expensive. If you want to help us build a trial, you are more than welcome.
• If networking is your thing, check out http://www.hackersforcharity.org/ ran by Johnny Long (he is in Uganda & in Wikipedia)
• And you can always find a computer with a virus that needs to be removed.

By all means, do come to Africa. It's an experience that will change your life. It did change mine. Am stuck here for 6 years and enjoying every single day of it.

And drop me a line when you want to join us for hacking or a beer.

I live in Uganda, which is the target audience for these satellites. We have 4 mobile providers, all providing GSM services. Mobile services are covered. What is not provided for is cheap IP. 500USD a month for 1 MB is Cheap. Currently the satellite prices are as much as 9000USD. Which is what our ISP would pay. Imagine our pricing or bandwidth sharing scheme! I am currently on a 64Kbps line for 175USD a month. I have a good deal. While the costs and access to communication services have improved tremendously over the last 10 years, there is a very real and true need for the next step. The step where people here can tap into the immense amount of knowledge that the human species is documenting on the Internet. That knowledge, for a great deal, is out of reach of most people here. And it is that knowledge that will eventually lead to the changes here that are so badly needed. This o3b initiative is the most beautiful gift to the African continent, ever.