10. The system of claim 8 , wherein said statistical information is updated by said keyword cache system upon a search request for a system keyword via said user interface.
8. A system for determining crowd sentiment comprising: a scraper computer communicatively coupled to a computer network, wherein said scraper obtains one or more documents published over said computer network at regular occurring sample intervals; a document repository coupled to said scraper for storing new documents of said one or more documents; a filter system implemented in a computer and coupled to said document repository for processing said new documents, wherein said filter extracts one or more system keywords from said one or more documents, wherein said filter generates keyword links and statistical information for each of said one or more system keywords in a predetermined period of time, wherein said statistical information for said each of said one or more system keywords comprises volume, velocity and crowd sentiment wherein volume is number of occurrences of a system keyword in each sample and wherein velocity is rate of change of volume; a relationship data repository coupled to said filter for storing said one or more system keywords and said keyword links and said statistical information; a keyword cache system for maintaining said one or more system keywords, said statistical information and said keyword links; and a user interface coupled to said keyword cache system and said document repository.