23. A searchable knowledge base for a plurality of items in a choice set, each of said items having an associated set of attributes including at least one subjective attribute, comprising: at least a processor; at least a computer readable medium, coupled to the Internet; a bus that interconnects said at east a processor and said at least a computer readable storage; and a computer program embodied on said at least a computer readable medium, said computer program comprising: instructions for harvesting information relevant to each of said items and a source of said harvested information from the Internet; instructions for extracting a set of normalized representations from a corresponding set of statements in one or more texts of said harvested information; instructions for analyzing the normalized representations to derive a set of scores for each attribute in said associated set of attributes for each of said items; instructions for aggregating said derived scores, for said each attribute in said associated set of attributes, by assigning a weight to each of the scores based on at least the source of the one or more texts; and instructions for incorporating attributes in said associated set of attributes and their corresponding aggregated scores, for each of said items, into said searchable knowledge base for said choice set, wherein a computer processor is utilized to automatically perform each of said instructions, the incorporating including: annotating a first statement harvested for a first item of the plurality of items with a first set of attributes and a corresponding first set of scores to generate a first annotation, the first set of attributes associated with the first item and determined based on an analysis of text in the first statement, the first statement being one of multiple statements harvested for the first item, the first annotation being one of multiple annotations in the searchable knowledge base, the first annotation including a link to the first statement, and indexing the annotations in the searchable knowledge base to facilitate retrieval of a statement of the statements that corresponds to an input attribute.
23. A searchable knowledge base for a plurality of items in a choice set, each of said items having an associated set of attributes including at least one subjective attribute, comprising: at least a processor; at least a computer readable medium, coupled to the Internet; a bus that interconnects said at east a processor and said at least a computer readable storage; and a computer program embodied on said at least a computer readable medium, said computer program comprising: instructions for harvesting information relevant to each of said items and a source of said harvested information from the Internet; instructions for extracting a set of normalized representations from a corresponding set of statements in one or more texts of said harvested information; instructions for analyzing the normalized representations to derive a set of scores for each attribute in said associated set of attributes for each of said items; instructions for aggregating said derived scores, for said each attribute in said associated set of attributes, by assigning a weight to each of the scores based on at least the source of the one or more texts; and instructions for incorporating attributes in said associated set of attributes and their corresponding aggregated scores, for each of said items, into said searchable knowledge base for said choice set, wherein a computer processor is utilized to automatically perform each of said instructions, the incorporating including: annotating a first statement harvested for a first item of the plurality of items with a first set of attributes and a corresponding first set of scores to generate a first annotation, the first set of attributes associated with the first item and determined based on an analysis of text in the first statement, the first statement being one of multiple statements harvested for the first item, the first annotation being one of multiple annotations in the searchable knowledge base, the first annotation including a link to the first statement, and indexing the annotations in the searchable knowledge base to facilitate retrieval of a statement of the statements that corresponds to an input attribute. 26. A searchable knowledge base as recited in claim 23 , wherein said associated set of attributes further includes one or more objective attributes.