Social media are widely known to be used for enhancing social interaction and entertainment purposes, now somehow may be considered as an informal method in the use of the English language. The study explores the use of social media such as Facebook as virtual spaces for certain groups of users to participate and use English in the interactions. The method chosen to conduct this research is qualitative using discourse analysis, and with qualitative research design, where a group of twenty middle aged to seniors aged 40-60 years and above, with high school education level residing in Manado, North Sulawesi, and surrounding areas were selected as participants. The participants were asked to fill out questionnaires and were interviewed regarding their use of Facebook and their interest in the use of English while using social media, and possibilities of learning and improving their English abilities through Facebook. The findings of the study showed that participants used social media mainly for expressive types of speech acts such as greetings, apologies and congratulations. The participants also tended to use the features of the social media that allowed them to express emotions mostly in pictograms, with an English word of expression, pictures, and emoticons. In addition, the plurilingual practice was also observed in the use of mixed codes which served to enhance the mutual understanding and interactions among the participants. Furthermore, the participants show comprehension of the use of the English language by replying to comments or friends' statuses in English using multimodality expressions, as the form of development of participants' use of English on Facebook. The results captured are comments from interlocutors which are mostly related and/or connected to the status or post they read. Finally, the participants confirm the possibility of learning and developing English language skills through the use of the English language on Facebook.