Of the three social media platforms examined, news-oriented blogs and mainstream media have the greatest overlap. Bloggers tend to credit traditional news outlets for their information and focus on the same topics, mainly political and international news. Even so, the two had the same top story for a mere 13 of the 49 weeks they were evaluated together.
Although blogs cover many of the same topics, the study found that bloggers tend to focus on more ideological and emotional stories — particularly those concerning human rights, like access to healthcare services or privacy on Facebook — and often with a personal or partisan angle. Bloggers also like to make a story out of “off-beat” or “buried” items in mainstream media coverage.