Since the market is potentially lucrative, some companies are gearing up for the gold rush by creating websites strictly for kids, and these websites allow parents to create profiles for their own children.
Common Sense Media reviews the media in kids' lives and keeps an eye on kid-oriented social networks.
Here is their top ten Pix over the last few years.
ScuttlePad (2010) Age 7+
Social network with training wheels is safe but limited.
Togetherville (2010) Age 7+
Kids' social site connects to parents' Facebook friends.
WhatsWhat.me (2011) Age7+
Tween social network with top-notch safety features.
Yoursphere (2009) Age 9+
Kid-only social network promises to block dangerous adults.
Franktown Rocks (2009) Age 10+
Music and social networking combine in safe, cool hangout.
GiantHello (2010) Age 10+
Facebook-lite gets a lot right, but watch out for games.
GirlSense (2009) Age 10+
Safe, creative community for tween fashionistas.
Sweety High (2010) Age 11+
Fun, closed social network for girls is strong on privacy.
Imbee (2011) Age 10+
Safer social networking if parents stay involved.
YourCause (2009) Age 13+
An easy, fun, socially networked way to raise funds.