One of the most valuable resources of the english language is the dictionary. I won't get into the history of the dictionary or what it's done for literal society. I will note that incorporating inline definitions into reading apps is not the easiest thing to do. Sure, we now have eReaders like Apple's iBooks and the Amazon Kindle that have dictionary integration built in, but what about the rest of of the text-based universe?
DropBox recently sat down with Gordon Wintrob over at getputpost.io to reveal how they built their APIs from primitive beginnings to handling over 500 billion calls a year. The Dropbox API lets you work with files, do full-text search and manage file and folder sharing.