The volume of data available on the World Wide Web makes it difficult for a domain novice to find reliable, accurate information. Such a novice may call upon a domain expert for information and advice. On the Web, this expert advice can be organized as an expert database behind a Web portal for the domain. The creation of such a database requires an architecture that captures the expert’s domain knowledge and finds and evaluates applicable Web pages from which data is extracted. This chapter outlines the components of an expert database Web portal, its design, and population.