A plurality of mobile communication devices for performing one or more locally collaborative operations. In one embodiment, one of the mobile communication devices provides a first local energy emission and, related thereto, a local wireless transmission signal, while another of the mobile communication devices responds to the local wireless transmission signal by providing a second local energy emission related to the first local energy emission. In another embodiment, one of the mobile communication devices receives a local stimulus, exclusive of vocal energy emitted by a user, and in response thereto provides a local wireless transmission signal, while another of the mobile communication devices responds to the local wireless transmission signal by providing a local energy emission related to the local stimulus. In another embodiment, each of the mobile communication devices receives a respective portion of a local stimulus in response to which at least one of the mobile communication devices transmits a local wireless transmission signal in response to which a second one of the mobile communication devices provides a local energy emission related to responses to the local stimulus in addition to its own. In additional embodiments, each of the mobile communication devices receives a respective portion of a local stimulus and in response thereto transmits a wireless transmission signal for collaboratively providing, to a remotely located system, information about the various responses to the local stimulus.