Insanely popular with kids, the question-and-answer service thrives on anonymity, making it fun and dangerous.
We've heard the stories about how anonymous social-messaging apps can be havens for bullying. But a pair of new smartphone apps seek to accentuate the positive.
[commentary] Just because a site or app lets you post anonymously doesn't mean it's dangerous. There are lots of good uses for these services.
The young hacker, who's real name is Jake Davis, opens up about his time in the cyberattack collective.
David Cameron has called for a boycott on websites that don't tackle bullying, following the death of 14-year-old Hannah Smith.