There are countless random emails floating around–forwarded from person to person to person–from pleas to send greeting cards to help a dying boy get into the Guinness Book of World Records to scary emails about cancer or random violence. (Oh, and don’t forget the get rich quick schemes!) Most of these emails cause an immediate reaction, because they’re meant to grab you with sympathy, fear, or greed. The problem is that although they sound convincing, they’re usually fake.