New submitter Mike Lape writes "Stocks plunged and recovered within minutes after the hacked AP Twitter account sent out a tweet that indicated that the White House had been the victim of an explosion and that President Obama had been injured. '...the Dow Jones Industrial Average took a quick 143-point plunge, before recovering most of its losses within minutes. The three-minute plunge triggered by the tweet briefly wiped out $136.5 billion of the S&P 500 index's value, according to Reuters data. Interestingly, Tuesday has been the best day of the week for the blue-chip this year with an average return of 0.46 percent. If the index closes in the black today, it will have been up for the 15th consecutive Tuesday. The last time the Dow rose for 15 straight Tuesdays was in 1927.' An analyst said, 'That goes to show you how algorithms read headlines and create these automatic orders – you don't even have time to react as a human being.'"