Intelink, the U.S. Intelligence’s Community’s classified intranet, shares many of the challenges of the World Wide Web. Users of Intelink are diverse (e.g., analysts, warfighters, policymakers) and distributed over the world. Information is still largely in English text (and HTML) documents on web servers with keyword-based search tools and browsers being the primary user applications. Security issues are paramount in a community that has traditionally lacked the culture and the infrastructure to share information widely beyond those who have a demonstrated need to know. Despite the existence of community standards, Intelink producers are in the nascent stages of using HTML metadata tags and content-based markup languages such as XML. The latter presents an additional challenge of gaining agreement among user communities on sets of tags whose meaning is explicit and exploitable by human users and software agents.