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Miriam Greis, Florian Alt, Niels Henze, Nemanja Memarovic
I Can Wait a Minute: Uncovering the Optimal Delay Time for Pre-Moderated User-Generated Content on Public Displays
In CHI '14: Proceedings of the 32nd SIGCHI Conference on Human Factors in Computing Systems. Toronto, Canada, April 26 - May 1, 2014. ACM, New York, NY, USA. (bib)

Public displays have advanced from isolated and non interactive âadâ displays which show images and videos to displays that are networked, interactive, and open to a wide variety of content and applications. Prior work has shown large potential of user-generated content on public displays. However, one of the problems with user-generated content on public displays is moderation as content may be explicit or troublesome for a particular location. In this work we explore the expectations of users with regard to content moderation on public displays. An online survey revealed that people consider that display content should be moderated and a delay of up to 10 minutes is acceptable if display content is moderated. In a subsequent in the wild deployment we compared different moderation delays. We found that a moderation delay significantly decreases the number of user-generated posts while at the same time there is no significant effect on usersâ decision to repeatedly post on the display.