US Patent 7991637 Freeform communication in calendaring system

A method of sharing a calendar between a plurality of users is described where the calendar is capable of holding one or more events. The method includes providing the calendar to each of said plurality of users. The method further includes allowing any of the plurality of users to add to the calendar a new event, a change to an event and a message relating to an event. The method further includes providing a new event, change to an event and/or message added by a user to the other users including automatically displaying at least one updated calendar to its respective other user without said other user having to cause said updated calendar to be fetched through a network.