Patent ID: 7523160

Claim:
An information provision exchange service system comprising: a plurality of communication terminals, each of said communication terminals being allocated to one of a plurality of subscribers; a communication network that communicably connects the plurality of communication terminals to each other; and a server that mediates information exchange between said plurality of communication terminals via said communication network, said server comprising: a registration device that registers both personal information and fictitious personal information for each of a plurality of users using said communication terminals in association with each other, wherein whether or not fictitious personal information to be registered matches the personal information of real people is checked based on personal information of real people, and wherein the registration of the fictitious personal information is performed when the fictitious personal information to be registered does not match the personal information of real people; a detection device that checks the registered personal information to determine whether or not information that can be used to identify any of the users of said communication terminals is included in information exchanged between said plurality of communication terminals via said communication network; a change request device that is operated when the fictitious personal information and the personal information are not dissociated, to request a change of at least one of the fictitious personal information of the user or the personal information to be registered; and a changing device that is operated when said detection device detects based on the registered personal information that the information that can be used to identify any of the users of said communication terminals is included in the information exchanged between said communication terminals via said communication network, to replace the information that can be used to identify the user with a corresponding portion of the registered fictitious personal information.