Facebook is a lost cause.
Back when it was so new and I was much younger, I updated every field there is from my full name to my home address to every single possible interest and well-read book, including every status. Not only did actual friends know more about me, so did strangers who sent random invites. That came back to bite me. And it bit me hard.
Granted, you don’t have terrible secrets. You have nothing to hide. And that your life is an open book.
Do you want every single person on earth reading into your life, even into the most personal parts?
Since I came face to face, so speak, with my first stalker, I learned that I should withhold information, especially if it’s delicate. And if there are fields to fill in, consider how much to share and who should be able to see it.
Unknowingly, I used a useful element: inconsistency.
Not telling lies, mind you; that’s a different matter. Inconsistency is using different usernames or handles paired with other email addresses and passwords. It may take considerable memory but it’s worth it.
Also, if you’re the very imaginative type, create versions of yourself online. Think of it as role-playing, with a character that has a full set of info that is different from yours. You could customize yourself in a way that could be the very opposite of who you are in real life.
Of course, there is no guarantee that your info will remain safe. The very administration could just see something about you that’s worth sending out to people who ask about you—all for something in return. And you wouldn’t know anything about it until it’s too late.
The short of this is to be careful. Watch what you share.