1. A method comprising: partitioning, by a reverse index system having one or more computers, search query terms to form partitioned sets of the search query terms; distributing the partitioned sets of the search query terms to a plurality of index servers of said reverse index system, wherein the distributing includes generating a distribution map that maps the partitioned sets of the search query terms to corresponding ones of the plurality of index servers; using said distribution map to index links to content nodes to said partitioned sets of the search query terms; and using said distribution map for processing queries received from browser nodes.