If you’ve ever noticed that some people pop up in your News Feed more than others, you’re seeing Facebook’s ranking algorithms at work. Now those algorithms are supposed to work even better. For users who don’t have time to scroll all the way through the stories posted since they last logged in, Facebook now will resurface older stories to the top of your News Feed if they’re popular enough—meaning, news of an engagement or a promotion that garners lots of likes will stick to the top of your Feed so you can see it. It’s not a drastic change, but Facebook engineer Lars Backstrom said tweaking News Feed’s algorithm will help users see more interesting stories. Facebook users read about 57 percent of their News Feed stories without scrolling down to see the rest. In beta tests of the algorithm change, the number of read stories jumped to 70 percent.