6. The method of claim 5 , further comprising selecting the other pages by a clustering analysis on a graph having pages as nodes that are connected to each other by queries for which the other pages are responsive.
6. The method of claim 5 , further comprising selecting the other pages by a clustering analysis on a graph having pages as nodes that are connected to each other by queries for which the other pages are responsive. 7. The method of claim 6 , wherein a web page is determined to be responsive to a query if the web page is a top n ranked search result for the query in a set of ranked search results relevant to the query, wherein n is a predetermined integer.