Blogoscoped pointed ;to Google's Baraza, a Yahoo-Answers-like Q&A site for Africa, , launched on 25 October 2010. Baraza is offered in English and French, although Google's links to the French questions aren't working for me.
"Baraza operates on a Points basis. You get 20 points for signing up, and 4 points each day you log in. If you're already logged into your Google account, there isn't actually any signup process. Your name and photo from your Google profile are automatically used, although you can change your username and avatar if you like.
There's a relatively elaborate point system (a "currency") used to pay for answers and as a reward for participation otherwise. Because it's globally available in English we're likely to see broad participation from outside of Africa in Baraza," writes the Baraza team.