| 摘要 |
An information activity management unit records an item characterizing information and an item of a user thereof per information collected. A user attribute information storage unit records a user attribute characterizing each user. When an information collecting unit fetches the information from a database system, a similar information user common attribute extracting unit obtains a user of information similar to the above information and obtains a user attribute common to the users from the user attribute information storage unit. An information distributing unit obtains all the users having this common user attribute from the user attribute information storage unit and distribute the collected information to these users. An activity state registering unit, when notified from the user of an effect that the distributed information is useful, registers the information activity management unit with this user as a user of the distributed information.
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