Facebook is launching an update Monday for users' news feed that will attempt to weed out stories that publish 'clickbait' headlines. The social network says it will evaluate links based on how much time people spend away from Facebook and how often users are sharing and discussing stories with friends. "Over time, stories with 'click-bait' headlines can drown out content from friends and Pages that people really care about," says a post by research scientist Khalid El-Arini and product specialist Joyce Tang. Facebook describes click-baiting as links "with a headline that encourages people to click to see more, without telling them much information about what they will see." The social network says "a small set of publishers" will see their distribution drop with the News Feed updates.