1. A method for providing for each of a plurality of wireless mobile units, corresponding one or more notifications related to an event or circumstance, wherein there is a network having a plurality of geographically spaced apart stationary network access units for receiving wireless signals from the mobile unit, comprising performing, for each mobile unit, M, of the mobile units, the following steps by computational equipment: (a) receiving network input by a subscriber to a service for providing the corresponding notifications for M, the network input for providing a data content in a persistent data storage, the data content used for determining the corresponding notifications; wherein the data content includes: (i) an identification of at least one entity authorized by the subscriber to be notified of an occurrence of the related event or circumstance, and (iii) one or more notification criteria whose evaluation is for determining whether an occurrence of the related event or circumstance has occurred; (b) subsequently, receiving information indicative of a location for the mobile unit M, wherein the information is determined using geolocation indicative measurements of wireless signals communicated between the mobile unit M and the network; (c) using an identification for the mobile unit M to access the data content in the persistent data storage for evaluating the notification criteria using the information; and (d) when the notification criteria evaluates to a first result, a step of notifying the at least one entity by a network transmission of an occurrence of the event or circumstance and location information indicative of a location of the mobile unit M, wherein the location information is determined using geolocation indicative measurements of wireless signals communicated between the mobile unit M and the network.