I don't put the children's faces on social media-I crop them out or get angles from the side or back. I share full photos with parents with an app (brightwheel). I also don't list my address in my facebook page, and never 'check in'. Location is turned off on my camera privacy too. These things are not because I'm paranoid (I share my own kids all the time), but out of respect for other parents' choices. Some don't like posting their kids, and it's easier to do the same thing for everyone.