as Mr X said, it's a problem you can bypass easily.
i haven't given them my name nor my surname. i haven't written the city where i'm born and living. i haven't given any personal data, like
telefon number or address, so tell me how can they use my data?
using this trick no one of my city, for example, knows i've facebook. i have no desire in finding people of my past because if they are "of the past" there's a reason, i always kept my relationships alive in time if i wanted to (my best friend is my best friend since 22 years
) so not adding people i know personally in the real life and who lives in my city (and with who i can have a real contact by telephone and meetings) i was able to remain in the shadows, and leave Fb only to those friends who lives far from me and with who i cannot have a
costant relationship because of the distance.