I ever worked in Nigeria and really experienced surviving traps. There is an item anti fraud called No. 419 clause. My principle is that do not belive "free meal". there are many things too good to accept.

some nigerians sent emails syaing plenty money will be transfered to my country, I was choosen to open an bank account to received this money. as a agency fee, some big money will come to me after I pay some money to a nigeria bank account as bank service fee or incoming tax. my unchanging reply is " hi, 419, go to hell"