10. A computing system, comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, the one or more programs comprising instructions for: obtaining, using the one or more processors, a plurality of documents, wherein a respective document in the plurality of document is associated with a query independent score; selecting a first document in the plurality of documents in accordance with a query independent score associated with the first document, wherein the first document has a fingerprint that indicates that the first document has substantially identical content to every other document in the plurality of documents; indexing, in accordance with the query independent score, the first document thereby producing an indexed first document; and with respect to the plurality of documents, including only the indexed first document in a document index.
10. A computing system, comprising: one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, the one or more programs comprising instructions for: obtaining, using the one or more processors, a plurality of documents, wherein a respective document in the plurality of document is associated with a query independent score; selecting a first document in the plurality of documents in accordance with a query independent score associated with the first document, wherein the first document has a fingerprint that indicates that the first document has substantially identical content to every other document in the plurality of documents; indexing, in accordance with the query independent score, the first document thereby producing an indexed first document; and with respect to the plurality of documents, including only the indexed first document in a document index. 14. The computing system of claim 10 , the one or more programs further comprising instructions for: removing at least one document from the plurality of documents when a total number of documents in the plurality of documents exceeds a predefined value.