Abstract-Abundant studies have shown that incorporating SNSs (social networking site) brings positive effects on language teaching and learning and enhances learners' learning spirit, interactions as a whole.However, a large body of the research focused mainly on tertiary education. Adolescents' perspectives are often neglected. To fill the interstice, this mix-method research was conducted in 2012 to examine how a group on a SNS assists 9 EFL adolescent learners' English learning. The two research questions were as follows: 1) How does participation in a group on Facebook assist adolescent EFL learners in language learning? 2) How do adolescent EFL learners perceive the role of this group in language learning?Data of the study were collected from, 1) on-line questionnaires, 2) group interviews, and 3) SNS postings and responses. The results obtained from the questionnaires show that 56% of the participants consider the existence of this group beneficial and 89% of the participants hold positive perspectives toward this group. The data obtained from the group interviews show that the participants perceive this group as a social bond and the extension of the classroom. Implications of this study were also discussed at the end of the paper.