Purpose: This study aims to examine the role of key network actors in relation to the discourse structure of a microblogging hashtag stream within a global agricultural educators' conference over two years. Prior work in online networks suggests that participation is dominated by highly active members, and in this study, the authors focus on…

Purpose: Social networks (SNs) play a significant role as environments supporting teacher professional development. The purpose of this to analyze the motivation and participation roles that Spanish teachers have when participating in SNs for their professional development in three professional stages: preservice teachers, beginning teachers and…

Purpose: The growth of online social network sites and their conceptualization as affinity spaces makes them well suited for exploring how individuals share knowledge and practices around specific interests or affinities. The purpose of this study is to extend what is known about highly active/key actors in online affinity spaces, especially the…

Purpose: Founded in sociocultural theories of learning, the authors argue that engaging learners in collaborative knowledge building is critical. When responding to others' ideas, research shows that learners in online settings more frequently focus on surface-level aspects of colleagues' contributions -- sharing, comparing and praising -- rather…