“We’re learning that the time people choose to spend reading or watching content they clicked on from News Feed is an important signal that the story was interesting to them,” said software engineer Moshe Blank and research scientist Jie Xu in a post on the company’s website.As a result, the site will now attempt to pick links which have a higher reading time. But don’t think that you’ll have a News Feed filled with 30,000 word New Yorker epics. “We will also be looking at the time spent within a threshold,” the pair said, “so as not to accidentally treat longer articles preferentially.”...The change is the latest example of Facebook tweaking the News Feed in ways that it hopes will encourage users to spend more time on the site. Last summer, it put a similar change in place when it came to posts on the site, promoting the posts which were read for more time even if no links were clicked. And in 2014, it changed the algorithm to penalise “clickbait” – links which users opened then immediately closed. “We learned that this often happened when the article someone clicked on wasn’t what they had expected from the post or the headline,” Blank and Xu wrote.