Do you know what's relevant to your customer? Having 100 customers means you know there are 100 different answers. Futurelytics, whose mission is, "Let's make Data Science available to everyone," has released an API that aims at making sure each of your offerings is of maximum relevance to each customer. The RESTful Futurelytics API brings these predictive analytic features to your applications through JSON responses.
Flickr has added more real-time goodness to their photo API. Using a publish / subscribe (PubSub) system, developers can now receive real-time updates across millions of photos across Flickr friends, Flickr Commons, and by tags and geo-location using the Flickr Real-Time API.