An information-processing apparatus includes: a link information-generating portion that reads two or more pieces of operation information having a user identifier and an object identifier for identifying an object on which a user has performed an operation, detects two or more object identifiers linked...http://www.google.ca/patents/US8090716?utm_source=gb-gplus-sharePatent US8090716 - Information-processing apparatus, information-processing method, and computer-readable storage medium
