Decoding your Facebook newsfeed

Plus, how one journalist is handling the challenges of reporting on the drone war in northwest Pakistan. The world's largest social media network is also one of the biggest news platforms - so allegations of a bias towards liberal news issues has triggered a lot of scrutiny, both from outside and from within. This week we unpick how Facebook delivers the news to you and why it matters. Many journalists and writers have been tracking the Facebook story and its implications. For this report, we have spoken to: Zeynep Tufekci, assistant professor at the School of Information and Library Science, University of North Carolina; Callum Borchers, media and politics reporter at The Washington Post; Will Oremus, technology reporter at Slate.com; and Kelly McBridge, media ethicist, The Poynter Institute.