Facebook said that clues for figuring out a user's location include being tagged in a photo at a specific place or a check-in at a location such as at a restaurant during a dinner with friends.
Along with location information shared in posts by users, devices connecting to the internet are given IP addresses and a user's whereabouts can then be noted. Facebook said knowing a user's general location helps it and other internet firms protect accounts by detecting when suspicious login behavior occurs, such as by someone in South America when a user lives in Europe.
Never was a fan of Facebook
DeleteFacebook
So what? Fb is suposed for folks not to track them