1. Method for mobile advertising on a personal cellular telecommunications device having a display screen, the method comprising the steps of: (a) displaying a Level 0 interactive display message including a content precursor on the display screen, the Level 0 interactive display message having at least one response mechanism for continuing regular device operation including displaying additional content associated with the content precursor; and (b) displaying mobile advertising on the display screen either simultaneously with the content precursor in a single display image or between a subscriber invoking the Level 0 interactive display message for displaying the additional content associated with its content precursor and displaying the additional content.