1. A system comprising: a processor for: generating a first pattern of behavior of a first wireless terminal, wherein the first pattern of behavior is based on a first plurality of records that report on events associated with the first wireless terminal, and wherein some of the events are telecommunications events experienced by the first wireless terminal, measuring how precisely the first pattern of behavior of the first wireless terminal matches a second pattern of behavior, and based on the measured preciseness, inferring that a first user of the first wireless terminal is substantially similar to a second user corresponding to the second pattern of behavior; and a transmitter for transmitting at least one of: (i) an indication of the inferred substantial similarity between the first user and the second user, and (ii) a request for a location estimate of the first wireless terminal.