Method of targeting a message to a communication device selected from among a set of communication devices

A method of sending a message from a communication device to another communication device selected from a plurality of communication devices, the method comprising the steps of:

• forming a network with the plurality of communication devices;
• obtaining information on relative geographic locations, with respect to the communication device, for the plurality of communication devices including deriving information on relative location from communication signals exchanged between the communication device and the plurality of communication devices, the communication device
• receiving signals directly communicated from the plurality of communication devices, and
• deriving information on relative location for each of the plurality of communication devices from an analysis of characteristics of the signals received directly therefrom;
• selecting for communication at least one device from the plurality of communication devices based at least in part on the obtained relative geographic location information;
• and
• transmitting a message to the at least one device.