Technology, we love it, and it help us in a variety of situation, we can communicate, ease or life and make fun and use it as entertainment or even more. but here is the issue, many of the time, like to share our location with our friends and via messenger apps, or social media. many people they dont like to share it or publicly it available for strangers. seriously is that necessary to let everyone in the world know where we are exactly every moment? so if you are the person who cares about it, check your apps setting to ensure what information will be accessible for strangers and even friends.
Lee Munson wrote a report about tracking your geo location on facebook using “Marauders Map” chrome add-on. the API might be disabled , but since the source code has been published in Github, curious developers may modify it and develop it with new features and concepts. this report can be read from nakedsecurity blog.
you may also reconfigure your facebook setting with a better privacy. read the following link from same Lee Munson.