The official Java SDK allows to record Keen.io data from any Java application. Resources available on GitHub include an Android quick start with installation, gradle, maven, and JAR download. Some of the usage instructions explain how to build a keen client, use the KeenClient singleton, and work with the source.
Since Bebo brought its Facebook Platform-compatible API out of closed beta a few weeks ago, as we reported in this post, the initial growth shows a steep curve from about 50 launch partner applications available before Jan 12th to 714 on Jan 26th.
Stannp.com is a free app that allows users to quickly and easily create their own custom-made postcards. The company provides the Stannp API that allows developers to integrate this tool into other applications. By snapping a picture or using an existing image, the user has the option to customize the image with fun effects and add the finished product to their Facebook wall, email it to a friend or have it turned into a real postcard to be posted the same day.