1. An electronic discussion system including servers for writing and managing opinion information, and a client for accessing the servers through a network, wherein said servers comprise: at least one storage server for holding contents of opinions; at least one discussion server for holding opinion indexes showing the locations of the contents of the opinions corresponding to said opinion indexes, and wherein said client comprises at least one of an opinion writing client and an opinion reading client; the opinion writing client for transferring and writing an opinion index made from newly received opinion information and the content of the newly received opinion itself into said discussion server and said storage server, respectively; and the opinion reading client for referring to the opinion indexes and the contents of the opinions which were recorded respectively in said discussion server and said storage server; wherein said opinion reading client, responding to a specified reading instruction, searches said discussion server for the opinion indexes in said list files, which corresponds to a specific topic as the reading object, and displays those opinion indexes, and searches said storage server for an opinion content corresponding to a specific opinion index selected from the displayed opinion indexes and displays that opinion; wherein said opinion reading client is either a participating discussion reading client, for which at least one of the topics of discussion has been specified as a steady reading object, or a non-participating discussion reading client without any specified steady topic for reading, and wherein said discussion server holds a discussion participants list including information about the discussion topics specified as the steady reading objects by each said participating discussion reading client, additionally records the opinion indexes sent from said opinion writing client onto the related opinion list files, and allots, according to said discussion participants list, the opinion indexes to all of said participating discussion reading clients, for which topics have been specified as steady reading objects.