3. Information about your location
If you aren’t vigilant about your privacy settings, you may be inadvertently revealing your location every time you upload a photo or post your thoughts. Giving out your location can be a bad move if you have acquaintances whom you’d prefer to prevent from tracking you down. And a post from the airport or your vacation destination can clue potential thieves in to the fact that you aren’t at home and probably won’t be for a while.