7. The computer-implemented method of claim 1 , wherein the calendar publication is provided without requiring modification to any of the calendaring databases and without requiring modification to any of the calendaring clients.
16. The computer-implemented method of claim 7 , wherein a plurality of distinct calendar publications is provided, including the calendar publication, wherein the plurality of distinct calendar publications overlap in terms of inclusion of at least one calendar event, wherein the calendar publication supports propagating a change by the publisher without requiring the publisher to first ascertain any subscribers and without causing any calendar event in the calendar publication to be duplicated, wherein the plurality of calendar publications facilitates synchronization to provide one or more latest updates to one or more subscribers and without pushing any subscriber-side calendar events to the plurality of calendar publications.