Purpose: Many enterprises recognize that social media is a valuable source of information propagation for brands. Using the self-congruity and social identity theories as theoretical bases, the purpose of this paper is to develop an integrated conceptual model and explore the effects of brand-evangelism-related behavioral decisions of enterprises on virtual community members. Design/methodology/approach: This study targeted community members who had purchased a specific cosmetic brand's products and had been members of an official brand fan page for at least one year. Using a survey of 488 valid samples and structural equation modeling was used to conduct path analyses. Findings: The results indicated that seven hypothetical paths were supported and exhibited desirable goodness of fit. Value congruity can be used to explain effects of dual identification on various relationships. Relationships among variables of brand evangelism are not independent. Specifically, the effect of brand purchase intentions on positive brand referrals is higher than that on oppositional brand referrals. Practical implications: The findings can help brand community managers to adopt innovative and effective strategies to gain community members' identification and maintain a desirable relationship between business and community members. In addition, this study should help marketers to increase the opportunity of maximizing the brand evangelism effect. Originality/value: This study contributes to the understanding for multiple perspectives of value congruity and adopts the extension viewpoint to understand community members not only have brand value and self-congruity problems but also have community membership goals and values related to the fit problem. [ABSTRACT FROM AUTHOR]
