Paper presented at the International Symposium on Online Journalism in Austin, TX, April 2012, by Alfred Hermida, Associate professor, Graduate School of Journalism, University of British Columbia; Seth C. Lewis, Assistant professor, School of Journalism & Mass Communication, University of Minnesota; Rodrigo Zamith, Doctoral student, School of Journalism & Mass Communication, University of Minnesota

1. Sourcing the Arab Spring:
A case study of Andy Carvin’s
sources during the Tunisian
and Egyptian revolutions
Alfred Hermida, University of British Columbia - @hermida
Seth Lewis, University of Minnesota - @sethclewis
Rodrigo Zamith, University of Minnesota

2. Institutional power
Photo: President of the European Council - http://www.flickr.com/photos/europeancouncil/

3. Institutional authority
Photo: VetforPeace - http://www.flickr.com/photos/vetforpeace/

4. ‘Must-read newswire’
Artwork: ssoosay - http://www.flickr.com/photos/ssoosay/

5. Tunisia: 168 sources
Photo: Wassim Ben Rhouma - http://www.flickr.com/photos/wassimbenrhouma/

6. Egypt: 185 sources
Photo: Ramy Raoof - http://www.flickr.com/photos/ramyraoof/

7. Source types
• Mainstream Media • Institutional Elites
• Mainstream Media • Digerati
Employees • Researchers
• Mainstream Media Org • Non-Media Org (Non-
• Mainstream New Media Org Activist)
• Celebrities
• Political Actors
• Alternative Voices • Other
• Non-Affiliated Activist • Bots
• Bloggers • Joke accounts
• Affiliated Activist
• Non-Media Org (Activist)

8. Tunisia: Source type
N=168

9. Tunisia: Tweets
N=332

10. Egypt: Source type
N=185

11. Egypt: Tweets
N=3,291

12. Broader range of voices
Photo: Ahmad Hammoud - http://www.flickr.com/photos/ahmadhammoudphotography/

13. Information cascade
Photo: Omar Robert Hamilton - http://www.flickr.com/photos/56458828@N02/

14. Reshaping the news
Photo: Floris Van Cauwelaert - http://www.flickr.com/photos/flomobile/

15. Node in networked newsroom
Artwork: ssoosay - http://www.flickr.com/photos/ssoosay/

16. Thank you
Photo: Omar Robert Hamilton - http://www.flickr.com/photos/56458828@N02/