Patent ID: 8918906

Claim:
A communication service system comprising a server device and a plurality of client terminals, wherein for each of the client terminals the server device: manages presence and/or absence of an authority for use of a content per client terminal, authorizes the client terminal that actually has the authority for use of the content to transmit an object to the server device, the object being associated with and added to a content element included in the content, the object being arranged on a different layer from that of the content, and the object being displayed in an overlaid state on the content element by overlaying the layer on the content, manages the object in association with the content element, and authorizes the client terminal that actually has the authority for use of the content to browse the content including the content element to which the object is added, and wherein the client terminal that actually has the authority for use of the content: displays the object in a vicinity of the content or in an overlaid state on the content element, and accepts an input of the object at a coordinate position in the vicinity of the content element or at a coordinate position overlaying on the content element, and the server device manages the object in association with the content element included in the content based on the coordinate position at which the client terminal that actually has the authority for use of the content has accepted the input of the object.