27. One or more computer devices, comprising: one or more processors to implement: means for receiving a same search query from a plurality of users; means for identifying search result documents based on the search query; means for providing information regarding the search result documents to the users; means for receiving information regarding which of the search result documents were selected by the users; means for determining whether a majority of the selections were selections for a particular one of the search result documents; means for assigning points to the particular search result document when a majority of the selections were selections for the particular search result document, where a quantity of the assigned points is restricted over a given period of time; means for assigning no points to the particular search result document when there is no majority of selections for the particular search result document; and means for using the assigned points as one factor of a plurality of factors to determine a measure of quality for the particular search result document for subsequently received search queries.
27. One or more computer devices, comprising: one or more processors to implement: means for receiving a same search query from a plurality of users; means for identifying search result documents based on the search query; means for providing information regarding the search result documents to the users; means for receiving information regarding which of the search result documents were selected by the users; means for determining whether a majority of the selections were selections for a particular one of the search result documents; means for assigning points to the particular search result document when a majority of the selections were selections for the particular search result document, where a quantity of the assigned points is restricted over a given period of time; means for assigning no points to the particular search result document when there is no majority of selections for the particular search result document; and means for using the assigned points as one factor of a plurality of factors to determine a measure of quality for the particular search result document for subsequently received search queries. 30. The one or more computer devices of claim 27 , where a plurality of the subsequently received search queries differ from each other.