Analysis: Truth and consequences - a dilemma for T

By Gerry Shih SAN FRANCISCO (Reuters) - Does Twitter have a credibility problem? For many, a single fake tweet from the Associated Press account that briefly roiled financial markets on Tuesday, driving the Dow Jones industrial average down about 145 points, vividly reaffirmed the fearsome, near-instantaneous power of the 140-character message. But the security lapse also revived doubts about Twitter's place in the media landscape - and its ultimate value - at a moment when its status as one of today's essential information networks had seemed all but cemented. ...