Information providing system, providing information updating method, information terminal device, information terminal device control method, information updating server, information updating server control method and information memorizing medium

摘要

Provided is an information providing system that is capable of precisely grasping actual situations of use of provided information and effectively updating the provided information. A space management server (12) includes a unit for transmitting a part of space information indicating a structure of virtual 3-dimensional space to a user device (28). The user device (28) includes a unit for receiving the part of the space information, a unit for sharing the part of the space information with another user device (28), a unit for acquiring user information of the other information terminal device, and a unit for outputting the acquired user information and part specifying information for specifying the part of the space information.