4. The method of claim 3 , further comprising: in the event that no other user currently has said document opened that is identified by said previously listed document identifier, removing an entry from said list of currently opened documents, wherein said removed entry contains said previously listed document identifier.
4. The method of claim 3 , further comprising: in the event that no other user currently has said document opened that is identified by said previously listed document identifier, removing an entry from said list of currently opened documents, wherein said removed entry contains said previously listed document identifier. 5. The method of claim 4 , further comprising: providing a user interface view to said second user, wherein said user interface view includes indications of multiple shared documents; wherein said indications of said shared documents each include indications of whether corresponding ones of said shared documents are currently opened by one or more users in said group; wherein said indications of whether corresponding ones of said shared documents are currently opened by one or more users in said group are each made up of at least one of the group consisting of visual indications, auditory indications and tactile indications; and wherein said indications of whether corresponding ones of said shared documents are opened by one or more users in said group include said perceptible indication that said at least one of said documents is currently opened by said first user.