mine don't mention Nigeria any more
I get one 419 scam attempt a week on average, and none of the recent ones mentioned Nigeria. Singapore, China, Hong Kong, UK and a few others.
Seems to me, Nigerians summarily declared me a non-viable target, but haven't notified their foreign subsidiaries yet.
Thanks for the article, and for detailing the scam. Don't think I've seen a more in-depth review of it.