Facebook, it seems, can provide both the means to begin infidelity that might end your marriage and the evidence to damage your divorce settlement that results from the case. A report from the UK found that one third of divorces handled by a law firm involved the use of material from Facebook.
The utility of Facebook is that it can allow you to communicate with a wide variety of people from a single platform. You next door neighbor in Dayton and friends on the other side of the world can both be apprised of your activities. The danger of Facebook and other social media is exactly the same.