The facebook-node-sdk by amachang allows developers to implement Facebook API functions using Node.js. It supports the Facebook Graph API, Facebook Query Language (FQL), and REST API. This SDK is compatible with Facebook's official PHP SDK.
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.
About.me is a popular service that allows anyone to create a single page profile of yourself that can connect to your profiles on Facebook, Twitter and other popular services. The concept is simple but limiting to the services that it currently connects to. This is no longer the case with the release of the About.me API that now allows developers to write new applications that can integrate into the About.me profile page.
The New York Times have just announced their latest web service API: TimesPeople. With this new API, the newspaper of record is giving developers access to their own Times-centric social network. This community feature, launched last spring, lets readers connect via their interest in the paper's content. The TimesPeople API now provides access to TimesPeople data for any user, including their profile, activities, news feed and social network (our TimesPeople profile).