1. A computer-implemented content information analyzing method, comprising: extracting a disclosure unit of an individual opinion from collected content information, and storing information concerning said disclosure unit into a data storage; specifying an object of said individual opinion, and storing said object of said individual opinion into said data storage; specifying a category as to said object of said individual opinion, and storing the specified category into said data storage; and analyzing a disclosed content of said individual opinion based on the specified category as to said individual opinion to specify an evaluation as to said object of said individual opinion, and storing said evaluation into said data storage, and wherein said specifying a category comprises specifying an industry type of a company, which is an object of said individual opinion, by comparing terms in said disclosure unit of said individual opinion with feature words included in an industry type glossary storing said feature words corresponding to respective industry types.