5. A system for document collection, grouping and summarization comprising: a computer processor; a document collection engine, the document collection engine being configured to be operatively coupled to a computer network to access a plurality of content providers; a computer readable document collection database, the document collection database being operatively coupled to the document collection engine; a cluster processing engine operatively coupled to the document collection database, the cluster processing engine grouping at least a portion of the documents in the document collection database into clusters having a plurality of related documents; a plurality of forms of multiple document summarization engines including a single event engine, a biography engine and a multi-event engine operating on the computer processor; a summarization router, the summarization router being interposed between the cluster processing engine and the plurality of forms of multiple document summarization engines, the summarization router determining a temporal relationship among the documents in the clusters and selecting one of the plurality of forms of multiple document summarization engines for generating a summary of the cluster based on the temporal relationship, wherein the summarization router selects the single event engine if a predetermined number of documents in the subset of the collection are generated within a predetermined time period and the router selects the biography engine if the documents in the collection are not generated within a predetermined time period and the number of capitalized words and the number of personal pronouns each exceed a predetermined threshold value; and a graphical user interface, the graphical user interface being operatively coupled to the cluster processing engine and the plurality of summarization engines and providing a display including cluster summaries and cluster information.
5. A system for document collection, grouping and summarization comprising: a computer processor; a document collection engine, the document collection engine being configured to be operatively coupled to a computer network to access a plurality of content providers; a computer readable document collection database, the document collection database being operatively coupled to the document collection engine; a cluster processing engine operatively coupled to the document collection database, the cluster processing engine grouping at least a portion of the documents in the document collection database into clusters having a plurality of related documents; a plurality of forms of multiple document summarization engines including a single event engine, a biography engine and a multi-event engine operating on the computer processor; a summarization router, the summarization router being interposed between the cluster processing engine and the plurality of forms of multiple document summarization engines, the summarization router determining a temporal relationship among the documents in the clusters and selecting one of the plurality of forms of multiple document summarization engines for generating a summary of the cluster based on the temporal relationship, wherein the summarization router selects the single event engine if a predetermined number of documents in the subset of the collection are generated within a predetermined time period and the router selects the biography engine if the documents in the collection are not generated within a predetermined time period and the number of capitalized words and the number of personal pronouns each exceed a predetermined threshold value; and a graphical user interface, the graphical user interface being operatively coupled to the cluster processing engine and the plurality of summarization engines and providing a display including cluster summaries and cluster information. 6. The system for document collection, grouping and summarization of claim 5 , wherein the document collection engine is configured to search the content of a predetermined set of content sources.