The Issuu Ruby SDK by Issuu allows API interaction, providing usage that demonstrates how to upload and delete a digital document. Installation available. API reference at http://developers.issuu.com/api/
With Twitter reducing its search history to four days, it is a challenge for applications that are dependent on search results, that went not days but even months back. Several applications have taken on the challenge to fill this void and are building search indexes on top of Twitter. Topsy is one of them and it's sharing its results as an API.
When it comes to mashups submitted to our directory, those helping users search for and discover new music consistently rank among the most popular. The number and variety of music services including metadata, social and streaming continues to grow and give developers more tools with which to build their apps. The list below includes some of the recent mashups of note.