My presentation at American Sociological Association, 2011 on privacy and disclosure strategic choices by young adults.

1. A Proactive Generation Reacts: Privacy, Disclosure and Strategic Action on Facebook By Zeynep Tufekci Assistant Professor University of North Carolina, Chapel Hill Twitter: @techsoc [email_address] n c.edu

4. Popular Perception:

9. Sample Characteristics 3.58 Years on FB MEAN 4.06 General Privacy Concern (1-5) MEAN 26.5 Asian-Ame. 13.0 Hisp./Other 17.5 Black 43.0 White 45.6 Female 53.3 Male N (%)

10. Sample Descriptives 3.3 How concerned are you that people you do not want to see your profile would see your profile (1-5) 1.8 To find potential friends 1.5 To find people with similar interests 3.4 Keep in touch with friends elsewhere 3.1 Keep in touch with friends in same school EVER USE FACEBOOK FOR: (1-4)

11. 90.3 Those whose last change was to make their profile LESS visible Of those who changed ever privacy settings (n=363): 82.9 Changed their privacy settings in the last year 36.7 Changed their privacy settings last month 9.4 Never changed privacy settings % Those who have: 19.6 Deactivate their profile 68.3 Unfriend someone 81.3 Deleted info from profile 73.9 Untagged themselves from a photo % EVER DONE THE FOLLOWING BECAUSE OF A PRIVACY OR VISIBILITY CONCERN?

12. Sample Descriptives 0.8% Had a legal problem 17.2% Had a fight with a parent 25.7% Had a fight with a friend 8.0% Broke up with a girlfriend/boyfriend 28.7% Had a fight with a girlfriend/boyfriend 2.5% Had issues at work 0.5% Did not get hired 0.8% Lost a job AT LEAST ONCE Did the Following Happen to YOU?

13. 21.9% Had a legal problem 53.2% Had a fight with a parent 66.2% Had a fight with a friend 51.2% Broke up with a girlfriend/boyfriend 70.9% Had a fight with a girlfriend/boyfriend 30.8% Had issues at work 19.4% Did not get hired 19.7% Lost a job AT LEAST ONCE Did the Following Happen to SOMEONE YOU KNOW?

14. 32.5% You got caught in a lie by someone else through your profile 59.6% You found that someone else had been lying to you by looking at their profile 77.8% You found out something very important about a friend 54.6% Someone much older contacted you 33.6% Someone harassed/stalked you online 39.8% You got upset with someone after seeing a picture of theirs with someone else 25.7% Someone else got upset with you seeing a picture of you with someone else 70.0% Other people posted pictures of you that you wish they had not 73.9% Someone you did not want found your profile AT LEAST ONCE Did Any of the Following Happen to You? (%)

15. Changes in Profile Visibility in Facebook 2006-2010 (December)

16. Privacy Concerns and Profile Visibility in Facebook 2006-2010 (December)

17. exp(b) exp(b) exp(b) exp(b) Female 1.583 1.732* 0.611 0.255** Black 1.032 0.684 0.428 1.232 Hisp/Other 0.693 0.929 1.828 1.192 Asian 0.676 0.934 0.680 1.861 Happened to me 0.988 0.980 1.044 1.016 I observed 1.099 1.023 1.079 1.085 Surveillance 1.049 1.004 0.754*** 0.937 Far friends 1.181 1.165 0.824 0.925 Near friends 0.892 1.538* 1.186 0.907 Find potential 1.002 1.283 0.740 1.031 Find similar 0.679 0.761 1.801* 1.337 Audience Concern 1.671*** 1.791*** 0.624* 0.375*** Years on FB 1.364** 1.047 0.803 0.773* _cons 0.097 0.008*** 22.286 8.462 N 383 383 383 383 ll -162.272 223.213 -97.021 -104.967 * * p<0.05, ** p<0.01, *** p<0.001 Logistic Regression Modeling Odds of Privacy Related Behaviors Less Visible Last Month Never Changed Public Profile

19. Know Don’t Know exp(b) exp(b) Female -0.098 -0.141 Black 0.100 0.129 Hisp/Other 0.209 -0.021 Asian 0.243** 0.145 Someone else -0.007 -0.003 Me 0.015 -0.032 Surveillance 0.010 0.036*** Far friends -0.023 0.104 Near friends 0.017 -0.026 Find potential 0.039 0.156** Find similar 0.029 0.138* Profile concern -0.033 - 0.164*** Years on FB 0.005 -0.015 _cons 3.219*** 1.494*** N 381 381 ll -365.679 -420.871 * p<0.05, ** p<0.01, *** p<0.001 Logistic Regression Modeling Odds of Accepting Friend Request from Person already known / not known

21. Nickname exp(b) Female 0.527 Black 2.810* Hisp/Other 0.951 Asian 1.194 Someone else 0.929 Me 1.081 Surveillance 1.021 Far friends 0.920 Near friends 1.020 Find potential 1.386 Find similar 0.798 Profile concern 1.196 Years on FB 1.101 _cons 0.031* N 383 ll -103.802 * p<0.05, ** p<0.01, *** p<0.001 Logistic Regression Modeling Odds of Using a Nickname of Facebook

25. Instead: Strategic disclosure

26. Instead: Cost/benefit analysis

27. Instead: Impression Management

28. Instead: Adaptation and Change

29. Thank you! Questions? By Zeynep Tufekci Assistant Professor University of North Carolina, Chapel Hill Twitter: @techsoc [email_address] n c.edu