10. The method of claim 8 , wherein the first portion of each list contain n entries, wherein the second portion of the list contain m*n entries, wherein m>2, and the third portion of the list contains 1*n entries, wherein 1>4.
8. A computer implemented method for indexing documents with respect to a first phrase, wherein each document has a document identifier, the method comprising: storing a primary index of phrases; storing a secondary index of phrases; establishing a list of documents that contain the first phrase; ranking, by operation of a processor adapted to manipulate data within a computer system, the documents in the list by a relevance score; storing a first portion of the list comprising higher ranked documents in the primary index, the higher ranked documents of the first portion stored relative to one another in the primary index in rank order of the respective relevance scores of the ranked documents, wherein the first portion includes a first section wherein each document listed in the first section includes a first plurality of relevance attributes, and a second section wherein each document listed in the second section comprises a second plurality of relevance attributes that are a subset of the first set of relevance attributes, and wherein the documents listed in the first section are ranked higher than the documents listed in the second section; and storing a second portion of the list comprising lesser ranked documents in the secondary index, the lesser ranked documents of the second portion stored relative to one another in the secondary index in numerical order of the respective document identifiers of the ranked documents.