In this lesson, you learn how to extend Tumblr with comments, built-in apps from the Goodies menu, and third-party apps.
Tumblr is continually being improved and upgraded by the staff at Tumblr itself, by outside companies, and even by individuals.
Tumblr added an Application Programming Interface (API) early in its history. An API allows outsiders—and insiders—to create extensions to software that are guaranteed to work, as long as they follow the API’s rules. Over time, an API is usually extended to make these extensions easier to create and more powerful.
Creating an API is a milestone for many kinds of technology for several reasons. First, it’s hard to do. Slowing ...