The May/June edition of D-Lib Magazine has an interesting article about a prototype tool that helps writers to find relevant content and references by watching what they type and performing searches based on the context of their writing.
The article’s abstract gives the motivation and a general description of the tool:
Information awareness is distinct from explicit information seeking, such as searching. In this article we describe an information awareness tool that supports text composition by providing awareness of relevant content and references proactively and non-intrusively. As a user composes text, the tool automatically searches multiple sources, retrieves results, and displays links to the results. A working prototype of the tool has been implemented using Web 2.0 and Digital Library 2.0 technologies, and is flexible and highly configurable for both Web search engines and deep web targets.
Full blog post here.