Provided is a system which manages a user community provided in an information processing system, in which user community information provided by a user is made available to another user for reference. The system includes a storage section which stores an audit policy defining contents of information to be permitted to be registered in each of a plurality of communities, by associating the audit policy with each of the communities; a detection section which detects a community to which information is provided in response to provision of the information by a user; and a registration control section which inhibits registration of information, provided by a user, in a detected user community on condition that the information violates an audit policy corresponding to the user community.