“DO NOT EVER PUT PERSONAL INFORMATION ON FACEBOOK.
NO DATES, ADDRESSES, PHONE NUMBERS OR PASSWORDS...................”
...and examine each and every photo you put up very carefully. Have TWO people look at it. If anything is even remotely readable in the photo, someone will try to read it. Think about reflections and shiny objects (even your eyes!). You would not believe the resolution of a modern high end camera, especially with a little bit of AI-aided image processing.
Most, —but not all— websites strip off location information from your uploaded photos. Remove this in order to be sure.
Don’t ever put up “contemporaneous” information divulging your present location.
ABSOLUTELY! When In take close-up photos of one of our cats and blow up the picture, I can clearly see myself taking the picture, and details in the room behind me, all reflected back from the surface of her eye.