"I've had parents come to me who've read their kid's blog and see scary things and now they don't know what to do with the information," says psychologist Susan Bartell. "They say, 'My kid's writing about the sex she's having, writing about all the parties she's going to. But I'm not supposed to know this. ... How do I handle this without completely betraying their trust?' "

The answers aren't easy. Bartell says she advises parents "to confront it — because if they don't confront it, they could have a dead kid." But she says getting permission first is always best.

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