The document profiles Martin Waller, who works as the Creative Learning Coordinator at Holy Trinity Rosehill Primary School, teaching Year 2 and coordinating learning for nursery through Year 6. It also notes that he is a postgraduate student studying New Literacies and does independent educational research with various organizations. The document discusses Waller's work using Twitter in primary classrooms and developing pupil voice through online social networks. It provides definitions and perspectives on social media, networks, and literacy.