Abstract: A computer network search engine is disclosed in which search results are analyzed to identify one or more themes, and individual results are clustered according to one or more of the themes. In one aspect the user may be presented with a graphical representation of one or more cluster of results. In another aspect the search results are presented in the cluster according to a ranked list, and wherein the ranked list may be modified according to attributes of a selected search result and/or dynamically altered according to observations of the user examining the results.