Columbia Journalism Review: The social network’s increasing threat to journalism – “At some point over the past decade, Facebook stopped being a mostly harmless social network filled with baby photos and became one of the most powerful forces in media—with more than 2 billion users every month and a growing lock on the ad revenue that used to underpin most of the media industry. When it comes to threats to journalism, in other words, Facebook qualifies as one, whether it wants to admit it or not…The fact that even Facebook’s closest media partners like BuzzFeed are struggling financially highlights the most obvious threat: Since many media companies still rely on advertising revenue to support their journalism, Facebook’s increasing dominance of that industry poses an existential threat to their business models…”