We describe studies of preferences about information sharing aimed at identifying fundamental concerns with and at understanding how people might abstract the details of sharing into higher-level classes of recipients and information that are treated similarly. Thirty people specified what information they are willing to share with whom. Although people vary in their overall level of comfort in sharing, we identified key classes of recipients rmation. Such abstractions highlight the promise of developing expressive controls for sharing and privacy. Author Keywords Information sharing, privacy, perceptions of trust ACM Classification Keywords
Judith S. Olson, Jonathan Grudin, Eric Horvitz