A method for mediating messages between an advertiser and a user of a mobile device, the method including the steps of: providing the mobile device with: a local storage memory having a locally-stored database, residing in the mobile device, with at least one advertising message of the advertiser; an ADM, residing in the mobile device, for selecting advertising messages from the database; and an event detector, residing in the mobile device, for detecting at least one event of the mobile device; detecting an occurrence of at least one event using the event detector; locally selecting at least one context-dependent advertising message stored in the database using the ADM, at least one context-dependent advertising message correlated with at least one event; presenting at least one context-dependent advertising message to the user on the mobile device; and remunerating the user for consent to receive at least one context-dependent advertising message.