With the advances in technology and popularization of the Internet, the interaction of human beings in real society has extended to the Internet forum. Due to the low barrier for entering the Internet, people can always speak their mind freely and make comments on whatever they want to. Behind a world that seems to have freedom and equality of speech, the expression of opinions is being tested by standards of different cultures and living backgrounds. Using Gossiping¢wthe most popular and interactive board on PTT¢w as the source data, this study identifies the spiral of silence between the mainstream opinions and non-mainstream opinions. Where the spiral of silence occurred, the study also examines the force which affected the spiral based on the theories of stigma and analyze its accompanying meanings. With different positions, people resulted in different critical standards and stigma phenomenon. When facing stigma, people should realize the causes of things from the social and cultural dimensions, and rethink the positive meanings that stigma brings to us instead of being afraid of it.