Crowdsourcing user studies with Mechanical Turk
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the fourth international conference on Communities and technologies
Pensieve: supporting everyday reminiscence
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Vanish: increasing data privacy with self-destructing data
SSYM'09 Proceedings of the 18th conference on USENIX security symposium
Loose tweets: an analysis of privacy leaks on twitter
Proceedings of the 10th annual ACM workshop on Privacy in the electronic society
"I regretted the minute I pressed share": a qualitative study of regrets on Facebook
Proceedings of the Seventh Symposium on Usable Privacy and Security
See friendship, sort of: how conversation and digital traces might support reflection on friendships
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Imagined communities: awareness, information sharing, and privacy on the facebook
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
Fighting for my space: coping mechanisms for sns boundary regulation
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Facebook and privacy: it's complicated
Proceedings of the Eighth Symposium on Usable Privacy and Security
The post that wasn't: exploring self-censorship on facebook
Proceedings of the 2013 conference on Computer supported cooperative work
Tweets are forever: a large-scale quantitative analysis of deleted tweets
Proceedings of the 2013 conference on Computer supported cooperative work
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Quantifying the invisible audience in social networks
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Privacy nudges for social media: an exploratory Facebook study
Proceedings of the 22nd international conference on World Wide Web companion
Retrospective privacy: managing longitudinal privacy in online social networks
Proceedings of the Ninth Symposium on Usable Privacy and Security
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This paper reports on two studies that investigate empirically how privacy preferences about the audience and emphasis of Facebook posts change over time. In a 63-participant longitudinal study, participants gave their audience and emphasis preferences for up to ten of their Facebook posts in the week they were posted, again one week later, and again one month later. In a 234-participant retrospective study, participants expressed their preferences about posts made in the past week, as well as one year prior. We found that participants did not want content to fade away wholesale with age; the audience participants wanted to be able to access posts remained relatively constant over time. However, participants did want a handful of posts to become more private over time, as well as others to become more visible. Participants' predictions about how their preferences would change correlated poorly with their actual changes in preferences over time, casting doubt on ideas for setting an expiration date for content. Although older posts were seen as less relevant and had often been forgotten, participants found value in these posts for reminiscence. Surprisingly, we observed few concerns about privacy or self-presentation for older posts. We discuss our findings' implications for retrospective privacy mechanisms.