1. A method of managing information flow in a collaborative application, comprising the steps of: installing a Proximity Determination Module on a host server wherein the Proximity Determination Module determines which ones of a plurality of application hosts are in a Proximity Group associated with the collaborative application; utilizing the Proximity Determination Module to determine which ones of the plurality of application hosts are in a first Proximity Group associated with a first of the plurality of application hosts; utilizing the Proximity Determination Module to determine which ones of the plurality of application hosts are in a second Proximity Group associated with a second of the plurality of application hosts different from the first application host; and periodically invoking said Proximity Determination Module to obtain updated Proximity Group information about at least one of the first and second application hosts.