U.S. President Barack Obama will go down in social media history as the first president to hold a virtual Town Hall meeting, when today he took questions via Twitter, and sent out the first presidential Tweet ever. Using the hashtag #AskObama on Twitter, President Obama’s Whitehouse team has been collecting questions for the President, through Twitter, since last Thursday. By the day of the meeting, more than 60,000 messages (Tweets) on Twitter had referenced the #AskObama hashtag. The first official presidential Tweet was a question for the President’s Twitter followers: “In order to reduce the deficit, what costs would you cut and what investments would you keep? BO”