The document discusses the role of Facebook as a technology-enhanced learning environment in education and teacher training, highlighting its potential and critical issues. It examines the contrasting views on Facebook's effectiveness in education, emphasizing both its benefits for social learning and community building, as well as the challenges related to digital access, privacy, and the informal nature of the platform. Additionally, it presents a study on the use of Facebook groups by teachers in Italy, identifying different types of social capital shared within these groups.