The pen is mightier than the sword" said in previous times, the role of dispatching information was given to the people with the special trainee, the people called "Mass-Communication". However, it has become possible for everyone to dispatch the information on social society with the advent of the Web. Accordingly, Enjyo is often observed on Social Networking Services. Enjyo is a phenomenon that leads the tragedy to individual/company who sends the promotion information via a process of

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... us formation as the result of many SNS users. In this research, we analyze the value of reputation on social media in some cases with the purpose of modeling Enjyo. In this study, we tried to numerically analyze and model some cases of Enjyo as well as to classify them by using the data on SNS. For achieving our purpose, we proposed a method of measuring a state of Enjyo and applied the case study method for analysis. With this method, the process of the analysis is likely to be influenced by one's subjective interpretation or assessment. Therefore, we also tried to facilitate its efficiency and accuracy with random sampling. As a result, several patterns of Enjyo were identified. Moreover, one of the cases of appropriate Enjyo extinction was observed.