Not too long ago, a teenage girl killed herself after being harrassed on the internet.
A boy her age had befriended her on the internet, and struck up a love-affair on the web (not in person).
Then the boy turned on her, and humiliated her in the worst possible ways. Then "others" jumped in and started humiliating her further. So she hung herself in her closet doorway, IIRC.
Later it was determined that the "boy" and the "others" never existed. The parents of one of her female classmates staged the whole thing to persecute her for a minor disagreement she had with their daughter concerning a boy at school. It's headed for trial I think.
EDIT - DOH!! This story is really old. Search Megan Meier, circa 2007.