This research presents a virtual exchange project between two tertiary institutions in New Zealand and Finland with 26 participants who were intermediate German language students. During the project, the students used a closed Facebook group to post about given topics; the posts combined video, audio, and text that adhered to multimodal meaning-making theory. The theoretical framework was task-based language teaching underpinned by the notion of engagement, social media in language learning, and telecollaboration. Language learning was viewed through a socio-cultural lens. A mixed-methods approach was used to collect data including questionnaires, interviews, and FB-logs. The qualitative data was analysed by content analysis method. The results indicate that the students perceived FB as an applicable tool for community building and they enjoyed the variation it brought to the course. Collaboration, use of communication tools, authenticity, and teachers' support fostered student engagement.