A social networking system comprising a plurality of communication devices; a tracking system; and a social networking interface, where, when a first communication device from the plurality of communication devices communicates with the tracking system so as to authorize the tracking system to track communications made between the first communication device and other communication devices form the plurality of communication devices, and thereafter communicate prescribed details of the communications to the social networking interface, the social networking interface operable to generate a set of invite recommendations for the user associated with the first communication device based on the prescribed details.