An audiovisual server for audiovisual communication, the audiovisual server comprising: a mixer module to receive a plurality of audiovisual streams from a plurality of audiovisual audience devices, wherein each audiovisual stream is captured by a corresponding audiovisual audience device; and an interestingness module to: receive sensor input data from each of the plurality of audiovisual audience devices, the sensor input data indicative of a state of a user of the corresponding audiovisual audience device; determine, using an interestingness algorithm, an interestingness rating associated with each audiovisual audience device based on the sensor input data; and select an audiovisual stream of the plurality of audiovisual streams based on the interestingness rating associated with each audiovisual client device; wherein the mixer module is further to transmit the selected audiovisual stream to an audiovisual presenter device; characterized in that the interestingness module is further to: determine whether accuracy of the interestingness rating of a corresponding audiovisual audience device could be improved by focusing on a particular parameter of the state of the user; and transmit instructions to the corresponding audiovisual audience device to focus the sensor input data on the particular parameter of the user in response to a determination that the accuracy of the interestingness rating may be improved. a mixer module to receive a plurality of audiovisual streams from a plurality of audiovisual audience devices, wherein each audiovisual stream is captured by a corresponding audiovisual audience device; and an interestingness module to: receive sensor input data from each of the plurality of audiovisual audience devices, the sensor input data indicative of a state of a user of the corresponding audiovisual audience device; determine, using an interestingness algorithm, an interestingness rating associated with each audiovisual audience device based on the sensor input data; and select an audiovisual stream of the plurality of audiovisual streams based on the interestingness rating associated with each audiovisual client device; receive sensor input data from each of the plurality of audiovisual audience devices, the sensor input data indicative of a state of a user of the corresponding audiovisual audience device; determine, using an interestingness algorithm, an interestingness rating associated with each audiovisual audience device based on the sensor input data; and select an audiovisual stream of the plurality of audiovisual streams based on the interestingness rating associated with each audiovisual client device; wherein the mixer module is further to transmit the selected audiovisual stream to an audiovisual presenter device; characterized in that the interestingness module is further to: determine whether accuracy of the interestingness rating of a corresponding audiovisual audience device could be improved by focusing on a particular parameter of the state of the user; and transmit instructions to the corresponding audiovisual audience device to focus the sensor input data on the particular parameter of the user in response to a determination that the accuracy of the interestingness rating may be improved. determine whether accuracy of the interestingness rating of a corresponding audiovisual audience device could be improved by focusing on a particular parameter of the state of the user; and transmit instructions to the corresponding audiovisual audience device to focus the sensor input data on the particular parameter of the user in response to a determination that the accuracy of the interestingness rating may be improved.