When the Netflix API turns three in October, it will also be making some big changes. With a focus on the quickly growing streaming service, Netflix will remove access to its DVD-related API calls. That means any websites or mobile apps that help organize your DVD queue will switch to only providing results that are available on its Netflix Instant streaming service.
There are a number of ways to discuss API popularity. Our metrics are based on developer engagement. The "track" functionality on ProgrammableWeb lets developers declare an interest in receiving updates on particular APIs. Which APIs and categories are seeing the most activity.