




A system for creating and maintaining information utilizing user opinions in a database of subjects, available to a population of users, comprising:
- Describing a database subject using a plurality of natural language terms, each of such plurality of natural-language terms having relevance to the subject according to an involved subset of such population of users;
- Rating the degree of relevance of each of such plurality of natural-language terms to such database subject according to each of such involved subset of such population of users;
- Associating, in such database, such respective natural-language terms and respective degrees of relevance with each such database subject;
- Computing, for such involved subset of such population of users, in such database, an overall degree of relevance of each of such plurality of natural-language terms to such database subject;
- Presenting to a particular user information, about a particular such database subject and such associated respective relevant natural language terms with such respective overall degrees of relevance;
- Collecting, from such particular user, such particular user's opinions about respective degrees of relevance to such particular database subject of such respective presented natural-language terms;
- Adding such particular user to such involved subset of such population of users and adding such particular user's opinions to such database;
- Updating, in association with such particular database subject, in such database, such overall degree of relevance of each of such plurality of natural-language terms associated with such particular database subject; and
- Presenting to a particular user information about a particular such database subject and such associated relevant natural-language terms with such updated respective overall degrees of relevance.

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