1. A method for providing advertisements in an integrated voice navigation services environment, comprising: identifying a current location associated with a navigation device using a location detection system; retrieving shared knowledge and information used to interpret natural language utterances that relate to a navigation context in the integrated voice navigation services environment; identifying one or more advertisements based on one or more affinities among the current location associated with the navigation device and the shared knowledge and the information used to interpret the natural language utterances that relate to the navigation context in the integrated voice navigation services environment; and generating a multi-modal output to present the one or more advertisements via the navigation device.