According to the social network, it can recognise these articles by calculating the amount of time users spend away from Facebook after clicking on an article. “With this update we will start taking into account whether people tend to spend time away from Facebook after clicking a link, or whether they tend to come straight back to News Feed when we rank stories with links in them,” Facebook said.
Another method deployed is to look at the ratio of people clicking on the content compared to people discussing and sharing it with their friends. "If a lot of people click on the link, but relatively few people click Like, or comment on the story when they return to Facebook, this also suggests that people didn’t click through to something that was valuable to them. "We’re making these changes to ensure that click-bait content does not drown out the things that people really want to see on Facebook.
While these articles tend to get a lot of clicks, Facebook said that its content survey has highlighted that over time, stories with click-bait headlines can drown out content from friends and pages “that people really care about.
Read more here: Business Spectator