System and method for operating reputation-based communication or content service. Method includes obtaining metric related to first user contributor reputation; identifying communication or content having association with first user contributor; and processing communication or content to generate processed communication or content based on the obtained objective contributor reputation. Service is broadly defined and may be selected from bulletin board, message board, chat room, forum, information provision service, content delivery service, email service, information provision service, search engine service, content delivery service, communication or content screening service, communication or content screening service, or other. System for providing reputation processed based on-line communication or content. Communication or content provided or generated by the inventive system or method. Business method for operating a communications or content provision service. Computer program and computer program product stored either on a tangible media or in an electronically accessible and readable form to implement method.