When it came to talking about the harmful effects of social media on kids, I used to feel like the Will Smith character in I, Robot: "Why won't anyone listen to me?" After I wrote a book about girls and social media in 2016, I got a lot of pushback from people accusing me of being a Luddite or raising a moral panic. That changed over time, once a deluge of studies sadly connected social media use in girls with rising rates of anxiety and depression, the loss of self-esteem, even suicide. Today, I don't think anyone would argue that social media is without significant dangers for children and teens. Nancy Jo Sales is the author of American Girls: Social Media and the Secret Life of Teenagers and Nothing Personal: My Secret Life in the Dating App Inferno.