I don't know about others here, the scam emails I get (and I get several per week) always claim to be from Burkina Faso, _never_ Nigeria. And it's been like that for years. In fact, despite being pretty good at geography, I can't recall what the capital of Nigeria is, but I can rattle off the capital of Burkina Faso (Ouagadougou) with ease, and even spell it correctly, just from seeing it in all these emails.