34. A system for facilitating cross-language communication among users of respective first and second wireless communication devices, the first wireless communication device having a first sensor, other than an antenna, configured to receive a first signal from an ambient signal source and the second wireless communication device having a second sensor, other than an antenna, configured to receive a second signal from an ambient signal source, the system comprising: a server configured to automatically coordinate establishment of a cross-language communication session including the first and second wireless communication devices, the server including: a session initiation receiver configured to receive information about first and second user inputs, received by the respective first and second wireless communication devices, indicating willingness to participate in the cross-language communication session; and a coordination module configured to automatically: compare the first signal to the second signal to determine whether the first signal and the second signal satisfy a similarity criterion; and if the first and second signals satisfy the similarity criterion, associate the first wireless communication device with the second wireless communication device.
34. A system for facilitating cross-language communication among users of respective first and second wireless communication devices, the first wireless communication device having a first sensor, other than an antenna, configured to receive a first signal from an ambient signal source and the second wireless communication device having a second sensor, other than an antenna, configured to receive a second signal from an ambient signal source, the system comprising: a server configured to automatically coordinate establishment of a cross-language communication session including the first and second wireless communication devices, the server including: a session initiation receiver configured to receive information about first and second user inputs, received by the respective first and second wireless communication devices, indicating willingness to participate in the cross-language communication session; and a coordination module configured to automatically: compare the first signal to the second signal to determine whether the first signal and the second signal satisfy a similarity criterion; and if the first and second signals satisfy the similarity criterion, associate the first wireless communication device with the second wireless communication device. 38. A system according to claim 34 , wherein the coordination module is configured automatically compare the first signal to the second signal to determine whether the first signal and the second signal satisfy a similarity criterion and automatically establish the cross-language communication session, all while leaving no permanent information in either of the wireless communication devices about the user of the other wireless communication device and leaving no permanent information in either of the wireless communication devices about the other wireless communication device, such that, once the cross-language communication session ends, no further cross-language communication between the wireless communication devices is possible, without establishing another cross-language communication session.