1. A method of identifying a WiFi access point that is suspected to have moved relative to location information associated with the WiFi access point which is recorded in a reference database, the method comprising: at least one of a mobile WiFi-enabled device and a server system in communication with the mobile WiFi-enabled device receiving information identifying at least one WiFi access point in range of the mobile WiFi-enabled device; at least one of the mobile WiFi-enabled device and the server system in communication with the mobile WiFi-enabled device retrieving location information specifying at least one location estimate of the mobile WiFi-enabled device out of a set of location estimates determined over a period of time; at least one of the mobile WiFi-enabled device and the server system in communication with the mobile WiFi-enabled device accessing a reference database to retrieve location information that is associated with the identified WiFi access point recorded in the reference database, the location information specifying a previously-determined approximate location of the identified WiFi access point; and at least one of the mobile WiFi-enabled device and the server system in communication with the mobile WiFi-enabled device comparing the location information specifying the at least one location estimate of the mobile WiFi-enabled device to the recorded location information associated with the identified WiFi access point to infer whether the identified WiFi access point has moved from its previously-determined approximate location that is recorded in the reference database, the inferring including determining whether the recorded location information associated with the identified WiFi access point is more than a threshold distance from the location information specifying the at least one location estimate of the mobile WiFi-enabled device.