In an unsurprising revelation, it turns out your Facebook news feed is watching you almost as much as you watch it. The Menlo Park-based company announced today that it is "improving" its news feature by taking into account not just whether someone liked or commented on an article but also by how much time they spent reading it. "Just because someone didn't like, comment or share a story in their News Feed doesn't mean it wasn't meaningful to them," Facebook explains."There are times when, for example, people want to see information about a serious current event, but don't necessarily want to like or comment on it."