The KISSmetrics Node.js SDK by Gabriel Lesperance allows API interaction to implement data analytics into marketing applications. Resources include configuration, JSON package, and usage. Source code available at https://github.com/glesperance/node-kissmetrics/blob/master/lib/kissmetrics.js
Location-sharing service Foursquare was down most of Monday, apparently due to a database issue. No Foursquare website or apps were available. And with the API also down, third party applications were helpless. Yet, it's a good reminder to developers to plan for downtime and to providers to have communications in place to let others know about your service's issues when they arise.
AddThis, a leading social infrastructure and analytics platform, has just announced the release of Social Brand Advocates, a new managed marketing service created to help companies connect and engage with consumers that are loyal and enthusiastic about their brands. In addition to marketing services, AddThis offers social plugins, analytics and consumer engagement tools as well as a variety of APIs and SDKs that allow developers to integrate the AddThis platform into websites and applications.