A system that incorporates the subject disclosure may perform, for example, operations including determining a representative trajectory of a number of mobile devices relative to a media presentation device, such as a digital billboard. An audience of the number of mobile devices is identified and user characteristics are obtained of the audience. A representative interest of the audience is determined from the user characteristics of the audience, and a media content item is selected according to the representative interest and the representative trajectory. The media content item is presented at the media presentation device to expose the audience to the media content item. Other embodiments are disclosed.