FYI, our First Lady is now on Twitter. The White House released this short clip of Michelle Obama tweeting from her new twitter account @JoiningForces in which she casually replies, "So this is how you tweet, huh?" Yes, that's it. Later, after the cameras stopped rolling, she looked at her watch, realized how much time she'd spent screwing around on Tweetdeck or whatever, and kind of hated herself.