I've heard of at least 1 businessman who allowed himself to be fleeced of 230,000-odd pounds because of this classic Nigerian fraud. However, it's so old now that the Nigerians are now pretending to be from other countries, usually.
*I tried changing a few things on the account-settings page re hiding profile/showing e-mail or online-status but it wouldn't allow me - I had to put in my password, I put in all the ones I've used in the past, but none of them worked. Any ideas?