A system for locating a mobile device user, including a memory, housed within a mobile device, for storing a contact list including records for a plurality of contacts, each record including (i) a name of a contact, (ii) a phone number for the contact's mobile device, if the contact uses a mobile device, and (iii) a list of at least one location entry, each location entry comprising (iii.a) a name of a location associated with the contact, (iii.b) a phone number at the location, (iii.c) an address for the location, and (iii.d) geographic coordinates of the location, and a locator for receiving as input the name of a designated contact in the contact list, for obtaining current geographic coordinates of the designated contact's mobile device, for obtaining current geographic coordinates of at least one mobile device for at least one contact in the contact list, other than the designated contact, and for generating as output at least one proximal entity, each proximal entity including either (I) the name of a contact, other than the designated contact, whose mobile device is located currently close to the designated contact's mobile device, or (II) the name of a contact, other than the designated contact, and the name of a location associated with the contact, the location being currently close to the designated contact's mobile device. A method is also described and claimed.