the ringling bros. barnum & bailey circus. >> so get ready.circus. "teen kids news" starts right now. >> welcome to "teen kids news." i'm mwanzaa. >> and i'm siena. here's this week's top story. social networking -- speak to any kid, and they'll tell you it's as much a part of their daily routine as eating dinner. speak to anyone from law enforcement, and they'll tell you that it can be an invitation for trouble. the internet is a two-way window. it allows us to research school projects and keep up with our friends. but social-networking sites also let outsiders into our lives -- outsiders who may try to kidnap, hurt, and even kill kids. and those dangers are very real. there are 665,000 known sex offenders in the u.s. that's more than the entire population of boston. and if that's not scary enough, listen to this. the fbi says 77% of all 14 year olds have been contacted by an internet predator. >> i was on a chat room, and somebody was on my friend's account, and when they talked to me, they claimed th