40. A method of optimizing searching as in claim 31 further including: responding to a user search query; and processing search result hits resulting from the query by clustering the search result hits based on categories defined in the classification system.
40. A method of optimizing searching as in claim 31 further including: responding to a user search query; and processing search result hits resulting from the query by clustering the search result hits based on categories defined in the classification system. 41. A method of optimizing searching as in claim 40 wherein processing search result hits resulting from the query by clustering the search result hits based on categories defined in the classification system further includes assigning a search result hit to a category in the classification system.