Facebook News Feed bug injected misinformation into users' feeds for months

A "bug" in Facebook's News Feed ranking algorithm injected a "surge of misinformation" and other harmful content into users' News Feeds between last October and March, according to an internal memo reported by The Verge. The unspecified bug, described by employees as a "massive ranking failure," went unfixed for months and affected "as much as half of all News Feed views." The problem affected Facebook's News Feed algorithm, which is meant to down-rank debunked misinformation as well as other pr...