7. The method of claim 6 , further comprising: wherein said indications of whether said corresponding ones of said shared documents are currently opened by one or more users in said group further enable a local user to request display of lists of said one or more users in said group that are currently accessing corresponding ones of said shared documents.
6. The method of claim 5 , further comprising: wherein said sending said on-line status of said first user from said server system to client systems associated with other users in said group includes filtering said list of documents currently opened by said first user to remove identifiers of documents to which specific ones of said other users in said group do not have access.