It can be a bad thing to have some people on facebook. My husband added a woman he went to high school with whom he barely remembered and never spoke to back then. She got it in her head that they had been friends for over 25 years and was way too friendly with him. (I am on this site in the first place because my husband has bipolar and is dealing with severe depression), this woman took advantage of him during a manic state and it was not good. It ended when we reported her to the police for stalking him. We are very careful now and don't add anyone unless we are sure about them, and we have no qualms about taking someone off or blocking them all together.