社群網站使用者不分年齡，幾乎沒有人不在這虛擬社交的浪潮上。儘管如此， 社群網站的交往卻不如現實般，社群中的絕大多數的內容是由少數發言者貢獻， 從來不發言的潛水者則佔了使用者基數的大部分。 本研究使用沈默螺旋理論的意見一致性概念與多種潛水動機作連接，藉此探 討發言者言論如何影響潛水者的動機選擇以及潛水行為表現。除此外，本研究藉 由同時使用社群聆聽技術和調查法作為研究方法，試圖以主、客觀區分兩種方法 並比較各自的益處和限制，也對社群聆聽技術只能使用發言者言論作為分析資料 來源的先天限制做出初步探討。 本研究收集到 599 份有效問卷和 285 篇社群網站文章，研究結果發現害怕被 孤立、社會性散漫兩種潛水動機完全中介了意見一致性對潛水行為的效果。主、 客觀研究方法的測量結果顯著相關，且對潛水動機之中介效果有相同預測能力。 / It is hard to find one had no experience using social networks in any age ranges. However, most of social network members are lurkers who barely post or comment to express their opinion. On the other hand, little regular posters contribute most content in every virtual society. This study used the concept of opinion congruency in spiral of silence theory to link up multiple lurking motives found by past studies in order to clarify how posters’ texts influence lurking motives and behavior. Besides, for the purpose of comparing pros and cons between social listening and survey, this study adopted both research methods to measure major opinion in discussion threads wherea seprated the two methods into subjective and objective ones. Also, this study would have preliminary discuss about the fact of limited analytical source of social listening. Collected 599 valid surveys and 285 social network discuss thread text, the result found that opinion congruency negatively influenced both lurking motives which positively influenced lurking behavior. The result also found that the subjective and objective research methods in this study were significantly related, and shared same predictive ability on both lurking motives’ mediated effect.