Palin herself showed her confusion about a country called Africa (not South Africa) when she stated this:

"If there are allegations based on questions or comments that I made in debate prep about NAFTA, and about the continent vs. the country when we talk about Africa there, then those were taken out of context."

There is no "country" of Africa there - or anywhere.

Even though a 'source' name now is proven to be a fake name, that does not change the fact that Palin herself thinks there is a country called Africa based on her own statement.

LISTEN TO HER OWN WORDS IN THIS INTERVIEW
She still seems to think there is a country called Africa.
http://www.youtube.com/watch?v=Ws3pagGP158