Tormenting the people you work with and for via Twitter probably isn't the best way to keep your job. Last week, Jofi Joseph, a White House national security official, was fired when he was revealed to be running the mysterious Twitter account that has been insulting White House employees and leaking internal infromation about the Obama administration for two years. Joseph was a director in the non-proliferation area of the White House's National Security. He had been tweeting under the name @natsecwonk, which was shut down last week.