Medium is at heart a blogging service, although right now it’s only open to a select few authors. The posts are organized into “collections” that use different layouts depending on the content. One section, “The Writer’s Room,” appears to be organized by Emergence author Steven Johnson and is a plain text article template, while “Been There. Loved That.” is a photo-driven page that looks squarely like Pinterest and is curated by a developer at the company.