Witch Hunt Gives Reddit Black Eye

In the days after the Boston Marathon bombings, the social media and entertainment site Reddit had the breakout moment it had been waiting for — but not the one it expected. After site members, known as Redditors, turned into amateur sleuths and ended up wrongly identifying several people as possible suspects, Reddit went from a font of crowdsourced information to a purveyor of false accusations, to the subject of a reprimand by the president of the United States himself, to the center of another furious debate about the responsibilities of digital media.