Thanks to Twitter and Facebook, some CNN watchers had already heard the news. Unconfirmed reports — that turned out to be true — of Osama bin Laden’s demise circulated widely on social media for about 20 minutes before the anchors of the major broadcast and cable networks reported news of the raid at 10:45 p.m., about an hour before Mr. Obama’s address from the White House.

via Before Obama’s Address, Asking Social Media for Answers – NYTimes.com.