In communication act within facebook, the authors not only expressesed their thoughts and feelings, but also tried to convince readers. These efforts indicated that the author showed their "stance" in the text. In the appraisal system, these related to the aspect of engagement. The engagement aspect describes the author's 'stance' based on the source of the text conveyed by the author. the source of text consisted of internal voice (authorial voice) and external voice (other’s voice). The text type consisted of monoglossic text and heteroglossic texts. This study was aimed to identify the characteristics of language realizations in Indonesian evaluative texts which showed the author's stance from the facebook account. This study used two approaches, namely qualitative and quantitative. Qualitatively, this study used appraisal, semantic, and pragmatic analysis, while quantitatively, this study used corpus analysis to identify the frequency of use of these types of text. The research data was taken from the facebook status of the accounts Kata Kita (KK) and Rakyat Oposisi (RO). From these two accounts, the data showed that both accounts tend to negotiate their messages by being characterized by the use of heteroglossic text types (71.42% for KK and 76.73% for RO). The realization of engagement in the use of Indonesian evaluative text from these two accounts can be seen in the use of: particle ('-lah', 'mah', 'nih'), epistemic adverb ('Sesungguhnya'), demonstrative pronoun ('itu'/ 'ini'), noun ('dasar'), conditional sentences, expectational interjection ('semoga'), excalamation, and the use of survey data and headline texts as alternative voices.