Think carefully about what's in the images and information you post - for example, can you identify your child's school from their uniform? Have you used their full name or shown them in recognisable places in your hometown? Things like this can make it easier to locate your child.
Linking your photos with information from your social media profile, the updates you post or your ‘check-ins’ can reveal a lot about your family’s identity and habits.
Remember that once a picture is online, it can be tough to control where it's seen and how it's used – despite being careful with your own privacy settings.