Abstract: To share short-term future schedules of the user and others used in mobile terminal devices by using social networking services. The information sharing system includes an information sharing server, an information sharing server database connected to the information sharing server and saves schedule data, and a mobile terminal device including a control unit, a display device, an input device, a storage device, and a communication device, wherein: the control unit acquires into the storage device the schedule data for a plurality of days and people from the information sharing server database connected to the information sharing server via the communication device and the communication network, and displays the acquired schedule data on a display screen of the display device with a tile screen; and the tile screen displayed on the display screen is scrolled in lateral and vertical directions by operating the input device for display.

Abstract: A document server system is described that comprises a plurality of electronic documents, plurality of messages relating to the electronic documents and an interface server for providing a client user interface. The client user interface provides a front user interface configured to display an electronic document to collaborators of the document. The front user interface includes a front switching input. Activation of the front switching input causes the client user interface to switch from the front user interface to a back user interface. The client user interface provides the back user interface configured to display one or more of the plurality of messages for each individual user that is related to the document on the front user interface. The back user interface includes a back switching input. Activation of the back switching input causes the client user interface to switch from the back user interface to the front user interface.

Abstract: Business card information is transmitted to a business information server 28 by pressing a button included in a page of a business card exchange server 22 at a user terminal 18. A cookie (including a cookie ID (user identifying information) as its content) indicating that the user has been authenticated is simultaneously transmitted to the business information server 28. An information registration assisting database 30 stores a cookie ID and an intranet site URL (access information) in association with each other, so that the intranet site URL corresponding to the received cookie ID can be read out. Based on the read out intranet site URL and the business card information already received, link information is generated for requesting registration of the business card information with an address book function of a groupware. The link information is then transmitted to the user terminal 18.