“A Publisher’s Job Is to Provide a Good API for Books: You can start with your index” (an article by Hugh McGuire)

A publisher’s job is to provide good APIs (Application Programming Interfaces) for their books. Good publishers of the future will be the ones who provide great APIs… Read the full article by Hugh McGuire:
http://toc.oreilly.com/2013/02/a-publishers-job-is-to-provide-a-good-api-for-books.html