1. An information processor for supporting content processing for a recommended user, based on a view history of each of a plurality of users, the processor comprising: a user's view history counter which counts the view history of each of the plurality of users; a similar user's view history counter which retrieves user information representing a user, as a similar user, whose view history is similar to a view history of the recommended user, and counts the view history of the similar user; a collaborative filtering processor which registers view history information of the recommended user and view history information of the similar user in a collaborative filtering matrix, in which the view history information is mapped in association with each content per user, thereby executing a collaborative filtering process; and an information creator which creates content recommendation information to be provided to the recommended user, based on a result of the filtering process.