Books are one example on the spectrum of types of content here. They're not enough on their own. A book is a poor source for an in-depth look at pending legis

Books are one example on the spectrum of types of content here. They're not enough on their own. A book is a poor source for an in-depth look at pending legislation, for example. Essays, short stories, deep investigative news stories, etc. also all fall into the "long form" bucket. A lot of those had their natural homes in magazines and newspapers, and those have taken huge hits as people's attention has turned to short, viral, online things instead.