本實驗主要觀察如何不同的網路環境影響使用者使用“社群登入”功能，並解著重於社群登入及第三方網站之網路環境如何交互影響使用者態度、使用意向以及使用者之實際行為。以使用者對資訊隱私的顧慮作為調節變數，測試隱私顧慮對使用者的態度影響。本實驗使用模擬網站，受試者皆為Facebook用戶，問卷部分包含中英文版本。實驗網站使用四個不同內容之旅遊網站，並各自搭配兩個資訊公開數量不同的社群登入功能，要求受試者瀏覽網頁後做出登入決定。
實驗結果顯示使用者的涉入程度、第三方網站的資訊品質以及第三方網站的視覺設計對使用者對社群登入的態度有顯著影響，而隱私顧慮則會在使用者對第三方網站資訊品質對使用社群登入的態度產生負面調節的作用。然而，隱私顧慮並不影響第三方網站視覺設計對使用者社群登入的態度。最後，本實驗也證明了使用者態度對使用社群登入之意向有顯著的影響，而使用者登入意象亦正面的影響使用者的實際登入行為。

This experimental study focused on the main effect of different perspective of online environments, and users' attitude toward social login feature on third-party, intention to use social login, and actual behavior of login via social media account. Concern for information privacy was treated as a moderator to test change in attitude of user's privacy concern. The experiment was conducted on dummy website with respondents who are all Facebook users. Questionnaires were conducted online using both English and Chinese. The research designs by 4 different travel websites with different level of online environment and 2 different amounts of requested items on website to participate on Facebook for logging in. ANOVA and others analysis methods were employed to test the proposed model. Findings show that users' involvement, information quality and visual appeal of third-party website have significant impact on attitude toward social login, while information transparency while login via social media did not have affect on users’ attitude toward social login. Concern for information privacy negatively moderate the relationship between information quality of third-party website and information transparency while login via social media account to user's attitude toward social login. However, there is no significant moderating effect on the relationship between visual appeal of third-party website and attitude toward social login. Attitude toward social login positively influence intention to use social login. Likewise, intentions to use social login also positively influence user's actual behavior.

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