Bill Clinton Nudges George W. Bush To Join Twitter

(Undated) -- Former President Bill Clinton is taking another famous politician to task for not being active on social media. Clinton noted former President George W. Bush's absence on Twitter Monday with the hashtag "#HowAreYouNotOnTwitter?" The message was retweeted by President Obama along with thousands of other people. Bush's father, former President George H.W. Bush, joined Twitter late last year.