The agent server of the present invention includes (i) a conversation monitoring section for monitoring, based on a conversation log saved in a family message board server, comments made by members belonging to a community, (ii) a status information collecting section for collecting status information of the community which information corresponds to (i) a specific member or a combination of specific members and (ii) a specific keyword or a combination of specific keywords which have been detected based on the conversation log, and (iii) a comment making section for outputting, to the server, a comment message which conforms to an event of the community which event is indicated by status information.
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