Warning: Your child’s location right down to his/her bedroom or favorite park may be tracked simply through the pictures you post. If your smartphone has location services turned on for the photos you take, the location of the photo is embedded with it.
You should double check your smartphone settings to verify that you are not embedding location information into the pictures you post online.
How to turn tracking information off:
Settings -> General -> Location Services -> Camera : turn off
To turn tracking information off on an iPod touch:
Settings -> Privacy -> Location Services -> Camera : turn off
Turn tracking off for Android:
If you’re taking pictures with a camera app: In the camera app go into settings, under camera options uncheck geo-tag photos. Other apps that can take pictures (like Facebook) will have their own geo-tagging settings, but they can be turned off, too.
You should also verify your privacy settings for social networking such as Twitter, Facebook, and Google+, to make sure that you are only sharing information with your friends, not with everyone (including search engines).
For Facebook specific privacy information, visit this post.