In Growing Up Online, FRONTLINE takes viewers inside the very public private worlds that kids are creating online, raising important questions about how the Internet is transforming childhood. "The Internet and the digital world was something that belonged to adults, and now it's something that really is the province of teenagers, " says C.J. Pascoe, a postdoctoral scholar with the University of California, Berkeley's Digital Youth Research project.

"They're able to have a private space, even while they're still at home. They're able to communicate with their friends and have an entire social life outside of the purview of their parents, without actually having to leave the house."

As more and more kids grow up online, parents are finding themselves on the outside looking in. "I remember being 11; I remember being 13; I remember being 16, and I remember having secrets," mother of four Evan Skinner says. "But it's really hard when it's the other side."