51. Common ground

In any collaborative system there is a need for awareness of others, of artifacts, of progress and of process. Without this, no common ground exists. Must be light weight or it won't be used. Must be transparent or we won't know how to use it or it will get in the way. Must be acceptable to use in a variety of situations

Example(s): Small floating icons or windows, quickly available info., discrete pieces of info - pick and choose information want and need presence, availability, location busy-users

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