For example, if you are chatting with a person with whom you have never been on your friends list or with whom you have only recently become friends, or who have no friends in common, the program scan will look for some phrases found in Previously obtained chat records found in criminals, relationship analysis and phrase material must add up before a Facebook employee actually reviews the communications and makes the final decision whether or not to send a ping the authorities (cnet.com). However, Facebook was mentioned in the investigation. of murder, rape, child sexual offences, assault, kidnapping, death threats, witness intimidation and fraud; in some cases, argumentative behavior on the site has led to “real world” violence, while in others pedophiles use it in an attempt to lure children into using Facebook out of their parents' reach.