Christopher Johnson authored as Tenorviol on Github to provide a third party Facebook SDK in Node.js language. The site mentions this is a port of Facebook's PHP SDK. It also states that users can interact with Facebook Graph API. Generally speaking, Facebook platforms APIs aim to develop social applications. In this case, Tenorviol offers a guide to install, use as connect middleware, perform stand alone usage, and test with Node.js.
Innovation in web service APIs is not always technical, sometimes it's about money. Such is the case with Yahoo's announcement that later this year they will begin charging for usage of BOSS (Build your Own Search Service), their search web service for developers. Given that search revenue is typically ad-driven, and that advertising doesn't typically mesh with APIs, this has meant that search APIs have been one of the most challenging classes of APIs for providers to monetize. So it's notable to see how Yahoo has chosen to tackle this: via a 'utility' pricing model, somewhat akin to how infrastructure services like Amazon Web Services charge by usage.
ConnectYard, a leading social engagement solutions provider, has just announced the launch of a brand new RESTful Web API which makes it possible for developers to create third-party applications as well as integrate ConnectYard functionality into other existing platforms.