First my age will show through, and then my attitude will show through. I don't know enough about Facebook (or care) security settings and so forth, but if you go on line to a public site that a for profit organization sets up with somewhat fuzzy rules on security and tell your life story with pictures and blow by blow details of where you are and what you are doing should you really get terribly upset when someone you don't know that well can follow all the details of your life?
Not Facebook but real life. I was at the baseball field one night when a friend intrduced me to a lady that is a Real Estate Agent that lives in my neighborhood. He has to step away for a moment and so I start talking to her and say something about real estate, and where she lives and how long she has lived in the neighborhood. Her eyes get real big and she says "oh my god, what are you a stalker or something?" At that point I explained as politely as I could that I received at least two mailings a week from her at my house with her name and picture on it, have seen her name and picture on billboards, the shopping baskets at Krogers and on billboards. I also told her I took exception with her stalker comment and would tell everyone I know in town (having lived here 18 years and her 5 so I know a few more people) that she was rude, accusing and the last person on earth they should use as a realator. She immediately fell all over herself apoligizing but I said yeah right, and walked away.
I am not slamming the OP or anyone who uses social media, but come on given the lack of security anywhere on the internet do things like this really come as a surprise?