I don't know, but it would be quite easy for someone over in Nigeria to characterise the British as a bunch of lager louts who like nothing more than getting pissed on a Friday/Saturday night and generally behaving like animals... is that racist? I think it is... you shouldn't tar a whole people by the actions of a minority... unless of course you're saying that all/most Nigerians are scammers.
Not all english are chavs either.........................I agree with illyun, you can't apply a generalisation to a whole country.
But there has been pleanty of press warnings of scamming from Nigeria.
I have nothing against people from Nigeria as I studied with a couple of great guys at Uni from there.

But like VW dealerships you get good ones and bad ones

where ever you go.