21. The system of claim 17 , wherein at least one of the predefined search result selection criteria used to evaluate a search result from the rerun query is based on a difference between a relevance score for the search result and a second relevance score for a second search result having a closest relevance score that is less than the relevance score for the search result being greater than a dropoff threshold.
17. The system of claim 1 , wherein the system is further configured to: evaluate search results from the rerun query and to select search results that meet predefined search result selection criteria; and wherein the search results sent to the computer associated with the particular individual computer user correspond to at least some of the selected search results.