Re: phishing mails
I'd be more worried if the Prince of Nigeria did an English course.
That Nigerian prince may well be capable of writing better English than you or I. The broken English is an inherent part of the scam.
The idea is to convey the impression that he's doing something dodgy but he's not very good at it, so you have an opportunity to take advantage of his stupidity to rip him off. So it's essential he demonstrate that he's not particularly bright. Bright enough to think of a scam but not quite bright enough to avoid clever you ripping him off.
It's no coincidence that there are racist overtones to this. He's a "darkie" and he can't speak English good. So it's morally justified for a white racist to rip off the stupid darkie, incidentally punishing him for doing wrong (a punishment he obviously deserves, because he has dark skin). Why does the racist aspect matter? Because racism is a belief mainly held by stupid people. If the scam appeals to racists it is pre-selecting them for low intelligence.