Alina Stefanescu's personal library of writing, essays, literary criticism.
I like to think of it it with the question: what is to reading what a text-editor is to typing?
Social features for sure. We could also experiment with crazy stuff like SYNTACTIC SPACING. Here's an illustration on a paragraph from Doug Englebart's Augmenting Human Intellect:
Reading is alluring. It has a nameless quality beyond satisfying desires for information and pleasure. Despite more colorful and interactive media, reading text somehow remains more refined, more seductive.