President Obama uses Twitter (http://www.twitter.com/barackobama) and Facebook (http://www.facebook.com/barackobama) to keep citizens up to speed on his initiatives, especially health care reform and Supreme Court nominations.
Barack Obama. (2009a, July 15). Launched American Graduation Initiative to help additional 5 mill. Americans graduate college by 2020: http://bit.ly/gcTX7 [Twitter post]. Retrieved from http://twitter.com/BarackObama/status/2651151366
Barack Obama. (2009b, October 9). Humbled. http://my.barackobama.com/page/community/post/obamaforamerica/gGM45m [Facebook update]. Retrieved from http://www.facebook.com/posted.php?id=6815841748&share_id=154954250775&comments=1#s154954250775
(Source: APA Style Blog)