Easy: Stop littering the feed with pictures, videos and articles. Exclude them altogether or show them very rarely. You can also easily identify "viral" content

Easy: Stop littering the feed with pictures, videos and articles. Exclude them altogether or show them very rarely. You can also easily identify "viral" content that doesn't belong to the user and remove it. Eventually they'll learn not to waste their time posting those things because they'll get no responses. And if someone posts an article, leave it as a plain old text link instead of creating a massive preview of the article (complete with title, picture, lede, etc.). Facebook does the opposite now, which leads people to use it as a content consumption platform rather than a social network. Obviously that's what Facebook wants, since content consumption is infinitely more profitable than people posting on each other's walls all day.