14. A method of censorship, the method comprising the steps of: generating, by an information availability device, historical information regarding a history of an object indicated by individual person generated data generated by an individual person; extracting, by the information availability device, text data that satisfies a predetermined historical condition regarding the generated historical information out of the individual person generated data; determining, by the information availability device, a number of references to an object in the extracted text data in connection with a user ID capable of identifying the individual person who has generated the individual person generated data, the number of references to the object indicating a number of times the object indicated by the individual person generated data is referred to, the number of times the object is referred to being a number of times the object is one of: re-posted, re-tweeted and referred to in an email chain; extracting, by the information availability device, related text data that satisfies a predetermined reference condition based on the number of references; transmitting, by the information availability device to a censorship device via a network, a particular expression related to the object; generating, by the censorship device, monitoring information based on the related text data; and generating, by the censorship device, a censorship control command as a specific executable command for the individual person based on the monitoring information, wherein the censorship control command causes blocking of information containing the particular expression.
15. The method of claim 14 , wherein the particular expression is based on whether one of: an amount, a degree and a rate of change, regarding the object indicated by the related text data is larger than or smaller than a predetermined threshold value.