leisure activities. This type of group communication is relatively unique in a mobile device context in that it supports small groups of known, and close, friends or family. Results and feedback suggest this meant that group-wide messaging was often personal in nature, and that group memberships were discoverable and meaningful, which also generated some social costs. Because the system is so closely tied to physical world social groups, it must mirror the dynamic nature of user’s social groups. Despite any relatively minor social costs, group-based mobile messaging shows promise for strengthening social ties and providing an outlet for both digital and physical world leisure that is entertaining and functional.
Special thanks to Shelly Farnham and Jordan Schwartz for their work on the Slam project. Also thanks to Henky Alimin for his development work on Slam.
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