In Kenya, $415m/month or $5bn/year (15% of GDP!) flows through cell phone banking.
This is from the Financial Times cool new “Graphic World” exhibit, available online and at New York’s Grand Central Terminal. Other presentations focus on “Global Economy” and “Recession & Recovery”.
The Economist has an interesting chart up over at their website which they say demonstrates that Facebook connections mirror old empires. They have images for the former British, French, Spanish and Portuguese empires. They really seem to hold-up for the Africa examples. Of course, China blocks Facebook, which means that we can’t really test this for the possibility that those new connections are rising. (h/t to Walter Russell Mead).