From the article:
The media environment that Luther had shown himself so adept at managing had much in common with today’s online ecosystem of blogs, social networks and discussion threads. It was a decentralised system whose participants took care of distribution, deciding collectively which messages to amplify through sharing and recommendation. Modern media theorists refer to participants in such systems as a “networked public”, rather than an “audience”, since they do more than just consume information. Luther would pass the text of a new pamphlet to a friendly printer (no money changed hands) and then wait for it to ripple through the network of printing centres across Germany.With increasing decentralized avenues for the public to receive information it is more important for communicators to understand not only where target audiences receive information -- they have to taylor content to ensure it is relevant and interesting.