Abstract: A method allows participants of a social medium or network to unrestricted communication with each other (i.e., without first requiring a pre-established connection or relationship between the communicating participants), without an unacceptable risk of unwanted or unwelcomed communications.

Abstract: A method for announcing arrival of an electronic communication in a wireless mobile device includes: (a) receiving from a wireless interface of the mobile device data corresponding to the arrival of the electronic communication; (b) processing the received data to extract therefrom identification of information, the identification information including an identity of a sender or caller; (c) encoding the extracted identification in an encoding scheme suitable for being played physically in an actuator of the mobile device; and (d) providing the encoded identification to a driver for the actuator of the mobile device. The identification information may further include a subject of the electronic communication. The encoding scheme may be, for example, a form of Morse code. The encoded identification may therefore be expressed by an alphabet represented by segments of audible tone of various durations to be played by the audio system of the mobile device.