Spinn3r is a web service that provides raw access to posts, articles, tweets, status updates, etc. being published - in real or near real time, allowing you to focus on building your application, mashup, or search engine. We find the sources, index their content and take care of all the heavy lifting around delivering large amounts of relevant data.
Calais is a rapidly growing toolkit of capabilities that allow you to readily incorporate state-of-the-art semantic functionality within your blog, content management system, website or application.
Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?