Another day, another controversy for Facebook.
A new report published by the Guardian Thursday states in no uncertain terms that the social network relies on "human intervention at almost every stage of its news operation." The paper published a 21-page internal Facebook document showing guidelines for the social network's news editors that include information about how they can "inject" stories into the site's Trending Topics module under certain circumstances. Gizmodo made the same allegations earlier this week but did not publish corroborating documents.