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The Notification Collage (NC) is a groupware system where distributed and co-located colleagues comprising a small community post media elements onto a real-time collaborative surface that all members can see. Akin to collages of information found on public bulletin boards, NC randomly places incoming elements onto this surface. People can post assorted media: live video from desktop cameras; editable sticky notes; activity indicator; slide shows displaying a series of digital photos, snapshots of a person's digitial desktop, and Web page thumbnails. User experiences show that NC becomes a rich resource for awareness and collaboration. Community members indicate their presence to others by posting live video. They regularly act on this information by engaging in text and video conversations. Because all people can overhear conversations, these become active opportunities to join in. People also post items they believe will be interesting to others, such as desktop snapshots and vacation photos. Finally, people use NC somewhat differently when it is displayed on a large public screen than when it appears on a personal computer.
Greenberg et al. (2001) studied this question.
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