Once kids have that first moment of realization that their lives are public, there’s no going back. Several teens and tweens told me this was the impetus for wanting to get their own social-media profiles, in an effort to take control of their image. But plenty of other kids become overwhelmed and retreat. Ellen said that anytime someone has a phone out around her now, she’s nervous that her photo could be taken and posted somewhere. “Everyone’s always watching, and nothing is ever forgotten. It’s never gone,” she said.