1Macon Phillips.Change has come to WhiteHouse. gov [EB/OL~.[2014- 01- 05].http://www.whitehouse. gov/blog/change_has come to whitehouse-gov/.
2U.S. National Archives and Records Administra- tion .Social Media Directory [EB/OL~.[2013- I0- 09]. http://www.archives.gov/social-media/.
3U.S. National Archives and Records Administra- tion .Social Media and Digital Engagement at the Nation- al Archives. ~EB/OL~.[2014- 01- 05].http://www.ar- chives.gov/social-media/.
4U.S. National Archives and Records Administra- tion .NARA Social Media tatistics [EB/OL~.[2014-1)9- 30].http://www.archives.gov/social- media/reports/so- cial-media-stats-fy-2013-08.pd~.
7Andreas M. Kaplan ,Michael Haenlein. Users of the World,Unite! The Challenges And Opportunities Of Social Media [J].Business Horizons ,2010,53(1):59 -68.
