A community server categorizes and accumulates messages exchanged by users on a virtual community for respective topics. The community server includes a subscription type setting unit, which provides, to each user and predetermined administrator, a mechanism for selecting a subscription type indicating...http://www.google.es/patents/US7539763?utm_source=gb-gplus-sharePatente US7539763 - Community-based collaborative knowledge system, and message subscription type setting method and reply message processing method in that system
Community-based collaborative knowledge system, and message subscription ...