Facebook is a dangerous place and this is a couple of things people need to be aware of:

Fun FB quizzes are giving out more info about yourself than you are aware of:

Police Warn: Taking Facebook Quizzes Could Get Your Identity Stolen

The heartstring posts, that ask you to respond, like and share are actually "like farming" sites:

Beware of Facebook Posts Asking Users to Type "Amen" to Help or Support Children, Adults or Animals