1. A subject ranking management system for providing ranked search results, the subject ranking management system comprising: a subject hierarchy managing unit for determining, using a taxonomy, one or more parent subject items for one or more matching subject items that match a given set of one or more search terms; a ranking calculation unit for statistically ranking relevant subject items including the matching subject items and the parent subject items; and a result organizing unit for organizing the relevant subject items as ranked by the item ranking calculation unit.