Facebook is rumored to be having a crisis behind the scenes, centered around something called “original sharing.” It’s the technical term for the sort of personal, from-the-heart updates that people make about their own lives. For instance, a piece of original sharing content would be a written status update, a selfie or a video of a newborn puppy doing a trick. But people haven’t been posting these as frequently, at least according to a detailed report published by The Information earlier this month. The news site claims to have seen confidential documents showing a 21 percent drop in original sharing over the last year.