My colleague Ted sent me this amazing story about online vigilantism published in the Washington Post.
A woman in South Korea let her dog relieved itself in the subway. She didn't bother to clean up and a row started with her fellow passengers. Someone took pictures of the incident with a camera phone. Within hours, accounts of the incident and the incriminating pictures were online. New information about her identity, her life and her past were added in real-time as acquaintances got involved and others started to play detectives. The dog poop story even made it into the national news. She is now known as "Dog Poop Girl" and is said to have quit her university in shame.