I found this on the online Guardian website, and its sooooooo good I just had to post it;
It has been described as the internet's first blood sport and is fast becoming one of the web's favourite pastimes. Fed up with having their inboxes clogged with emails from Nigerian fraudsters promising untold riches, the victims are finally hitting back.
Scam-baiting - replying to the emails and stringing the con artists along with a view to humiliating them as much as possible - is becoming increasingly popular with more than 150 websites chronicling the often hilarious results.
Known as 419 fraud, after the section of the Nigerian penal code that it contravenes, the scam generates millions of pounds each year. According to the National Criminal Intelligence Service, the average loss in the UK stands at around