Keeping children safe on social media: What parents should know to protect their kidsKiichiro Sato / AP, fileAt what age should kids be on social media? But parents — and even some teens themselves — are growing increasingly concerned about the effects of social media use on young people. Here are some tips on staying safe, communicating and setting limits on social media — for kids as well as their parents. “There is not necessarily a magical age,” said Christine Elgersma, a social media expert at the nonprofit Common Sense Media. Watch a documentary like “The Social Dilemma” that explores algorithms, dark patterns and dopamine feedback cycles of social media.