Since Candice asked about content snacking in the comments we'll tackle content snacking first.
Content snacking is not about displacing or changing your current media habits. Content snacking is the consumption of additional media in time periods when you have not previously been consuming media. It is media consumption between your larger media meals.
The type and form of media consumed in content snacking is different from media consumed through traditional channels. It tends to be "bite sized" in scope and scale. It needs to be micro-chunked, one topic per chunk. It needs to be easy to share with your friends. It needs to require little or no commitment on the side of the consumer.
Mobile is all about content snacking. Mobile media consumption will not cannibalize the channels through which media is currently consumed. Mobile opens up additional channels.