| 摘要 |
PROBLEM TO BE SOLVED: To provide a message contribution system allowing each user to easily find a message desired to be referred to from among messages contributed to a message board about a topic in which unspecified users participate.SOLUTION: A message board 100 of a topic R in which a large number of unspecified users participate is provided by a server device. The user participating in the topic R can designate a message contributed by an arbitrary user as a monitoring target 102. The plurality of users out of the users participating in the topic R designates the same message as the monitoring target 102 in a prescribed period, and the users setting the same message as the monitoring target are grouped and become participants of a temporary topic T when contributing a new message to the monitoring target 102. The user having become the participant of the temporary topic T can use a message board 200 of the temporary topic T provided separately from the message board 100 of the topic R. |
