Next time you get one of those scam emails where you've won the lottery from some far off country you've never visited, or you have a long lost relative that left you millions of dollars in currency that you've never heard of before, think about doing the world a public service. Send an email back, without your bank account number of course, and keep them engaged in an endless series of correspondence until they simply give up. This way you can keep them busy and hopefully prevent one more gullible person in the world from giving up their entire life savings.