Too Many Facebook Friends? Content Sharing and Sociability Versus the Need for Privacy in Social Network Sites

Little research has been conducted on the two most important criteria for the success of social network sites (SNS), that is, content sharing and sociability, and how these affect privacy experiences and usage behavior among SNS users. This article explores these issues by employing in-depth interviews and explorative usability tests, comparing the experiences and usage of younger and older Facebook users. First, the interviews revealed that Facebook users in all age groups reported more contact with several different groups of people, which reflects different types of social capital (i.e., family, friends, and acquaintances), because of Facebook, but not without consequences for privacy. Having too many Facebook ofriendso and access to different social capital disrupt the sharing process due to experiences of social surveillance and social control. This social control often forces younger people in particular to use conformity as a strategy when sharing content to maintain their privacy. Further, the interviews revealed different motivations and usage patterns when older and younger users are compared. Second, the usability test found a significant difference between younger and older adults in time completion and task completion related to Facebook settings. Younger users are more skilled in their Facebook usage, whereas adults over the age of 40 have difficulties in understanding the navigation logic and privacy settings. Younger and older adults display completely open public profiles without realizing it. Finally, the design and theoretical implications of the findings are discussed.