Specifically, moving from a push marketing model to a pull in which the audience is engaged in a different way. The audience, which is has historically been bombarded with TV ads, that they either listen to or not, is now interacting with marketing messages in a completely different way.
Gone are the days where folks veg in front of the TV with nothing else going on around them. (for most people :))
A study by Yahoo! Global Market Research study (2006) showed that individuals rarely watch TV as a standalone activity.