Last month, authorities charged a man with the murder of a college student who was trying to sell a car on Craigslist. They allege that he killed the victim so that he could keep the money and the car. It wouldn’t be the first time someone was charged with murdering someone they met on Craigslist. Philip Markoff, a medical student who committed suicide while awaiting trial for murder, was also accused of killing at least one victim he had met on Craigslist. It’s a chilling reminder of the dangers you may face when you arrange to meet in person someone you’ve only communicated with online.