From a February 4 press release:
The Vendor Initiative for Enabling Web Services (VIEWS) has taken an important step toward enhancing interoperability between library resources by releasing a white paper describing the potential for Web Services in the metasearch arena. The paper is the work of the VIEWS Metasearch Committee and serves as a scoping document for the VIEWS membership to use in deciding which Web Services should be developed.Here is a link to the white paper.
Topics addressed in the paper include Web Services definitions for metasearch, authentication and authorization issues, resource discovery, search/retrieve and statistics and Web Services. The paper also includes a summary of findings and recommendations. Metasearch is the process that makes it possible for the end user to enter a search once and to get results back in a single list from any number of different types of information sources.