14. A method for managing a mobile communication, comprising: establishing a group associated with a spontaneous event, wherein each member of the group is associated with a mobile device, the spontaneous event being a gathering of people in a physical location; sharing among the group during, the spontaneous event at least one of a text message or media content message using at least one of the mobile devices; determining an initial start time and an end time associated with the spontaneous event, based on the sharing of the text message or media content message; and determining a revised start time as when a rate of sharing of messages exceeds a threshold during the event, wherein the sharing of messages includes messages received from one member of the group that are distributed to other members of the group.
15. The method of claim 14 , further comprising: modifying the membership to the group during .the spontaneous event.