No cash in Nigeria is really interesting idea for sure. I mean how evil you have to be to do that?
Another interesting thing is, when asked about "what would make things better in your country", most people in africa respond "we need more government and the government should care more about us". At least that's what I see on youtube. I know, very unreliable source.
I hope bitcoin helps with all this. And that early adopters use their wealth to make things around them better.