27. A method, comprising: at a computer having one or more processors and memory storing one or more programs for execution by the one or more processors: sending Internet usage data for a particular individual computer user to a server computer, wherein the usage data include a plurality of search queries previously submitted by the particular individual computer user; receiving a set of search results in accordance with an automatic re-run of a particular search query of the plurality of search queries in its entirety; wherein the identified search query is a search query previously submitted by the particular individual computer user; wherein the particular search query is identified, without human intervention by the particular individual computer user, from the plurality of search queries, and meets one or more predefined query selection criteria; and wherein the automatic re-run of the particular search query is without human intervention by the particular individual computer user; and displaying at least one search result of the set of search results.
38. The method of claim 27 , wherein the plurality of search queries previously submitted includes search queries against a set of document indices, and wherein the identified search query is a search query against an index of documents.