Bing API 2.0 is a re-architected Bing API (part of Project Silk Road) that offers open, flexible options for building or enhancing your site or applications. Developing an application with the new API is straightforward: Choose a SourceType (s), choose an output protocol (JSON, SOAP, or XML) and then customize according to your needs. With this REST API, you can: get web results; video results; image results; integrate ads; use a spellchecker; grab news results, and more.

More info: AppID