Scitopia.org

Scitopia.org "is a free federated vertical search that lets you explore the research most cited in scholarly work and patents in a single click. Brought to you by thirteen of the world's leading science and technology societies, scitopia.org searches more than three million documents, including peer-reviewed journal content and conference proceedings. You'll get to the content you need quickly without having to search each individual society's online library. Scitopia.org, the best place on earth for technology research, will be revealed in June 2007"