Politico – “The White House has started using a new weapon for correcting news reports, pushing back against a negative story, or shaping the press corps narrative of the day: Twitter. On Monday, deputy press secretary Bill Burton told his more than four thousand followers — which includes much of the White House press corps — that a Washington Post report that morning was wrong. The Obamas, he noted, went to Chicago for Valentine’s Day in 2009, not this past Sunday, as was reported in the Post’s Style section.”