10. The computer-implemented method of claim 5 , wherein the navigation score for the revised query is determined by: determining a traffic proportion for each resource identified by a search engine in response to the revised query, the traffic proportion being a proportion of traffic from search results generated in response to the query; and the navigation score threshold is a traffic proportion threshold.
11. The computer-implemented method of claim 10 , wherein identifying the navigational resource for the revised query comprises identifying as the navigational resource a resource having a traffic proportion that exceeds the traffic proportion threshold.