Facebook typically floats stories to the top of your News Feed based on how likely people are to interact with them, but as you can probably attest, that's not how it works in real life. Just because you're interested in a post doesn't mean you want to like it or leave a comment, does it? Thankfully, Facebook knows the score. The social network is updating News Feed to prioritize stories based on both interactions and survey-based research on relevancy. The move could show you more intriguing stories that would otherwise slip underneath the radar.