From BERG's blog:
"Each of the ideas in the film treat the surface as a focus, rather than the channel or the content delivered. Here, media includes messages from friends and social services, like foursquare or Twitter, and also more functional messages from companies or services like banks or airlines alongside large traditional big ‘M' Media (like broadcast or news publishing)."
Media surfaces: Incidental Media from Dentsu London on Vimeo.