Patent ID: 7284033

Claim:
A computer-implemented method for coordinating an event by using relationship information stored in a database accessible by a server computer, the method comprising: receiving at the server computer a message sent from a sender's non-GPS enabled mobile telephone, the message containing self-declared location information indicating a physical location of the sender at the time the sender sent the message; the server computer parsing from said message the physical location of the sender at the time the sender sent the message, determining from the message the sender's identity, the physical location and an indication whether said event is private or public; and wherein if said event is indicated public, the sever computer publishes the physical location of the sender; and wherein if said event is indicated private, determining based on the relationship information stored in the database, a plurality of users associated with the sender who have authorized the sending of send-a-notification event messages, each of the plurality of users having a mobile telephone; and sending the notification messages to the mobile telephones of the determined users, the notification messages containing the sender's self-declared location.