Updated: February 02, 2012
With more than 500 million users (there are a little more than 300 million people living in the United States), Facebook is far and away the largest social networking site out there. Channel One is on it, you're on it, your mom is probably on it.
But how much do you really know about how they control your information? Could what you're saying online get you into trouble in the real world?
Video: Facebook Envy
New studies are showing that teens can start to feel bad over social networking.
Video: Think Before You Post?
Should these teens be more careful or is it none of the school's business?
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