1. A method of operating a multimodal application, the method comprising: selecting, using a processor, a demeanor for presentation of content of a content provider via the multimodal application, wherein selecting the demeanor comprises considering, by the processor, at least one characteristic of a user of the multimodal application to whom the content is to be provided, the user differing from the content provider, wherein the at least one characteristic of the user comprises whether the user is a repeat user of the multimodal application; and presenting the content to the user using the demeanor; wherein selecting the demeanor comprises selecting a visual demeanor and/or selecting a vocal demeanor; wherein selecting the visual demeanor comprises selecting from the group consisting of background colors, text colors, text fonts, and selection and placement of graphic elements; and wherein selecting the vocal demeanor comprises selecting from the group consisting of speech rate, voice family, pitch, pith range, stress and richness.