Introduction: Sociocultural Research Perspectives for Online Teaching and Learning, Carla Meskill Part 1: Diversity/Identity Online 1. Balancing Multiple Discourses in the U.S. Distance Learning Context:A Case of a Chinese Student, Gulnara Sadykova 2. Projection of Teacher Identity in Introductory Posts: a Critical Discourse Analysis of Strategies of Online Self-Presentation, Denis Samburskiy Part 2: Shifts in Practice 3. An Exploration of Three-Dimensional Virtual Worlds through ESL/EFL Teachers' Perspectives in Second Life, Ozan Varli 4. Collaboration Unpacked: Tasks, Tools, and Activities, Andreas Lund 5. Synchronous Online Language Teaching: Strategies to Support Learner Development, Iryna Kozlova and Evon Zundel Part 3: Shifts in Participation 6. The Educational Value of Student Talk in Online Discussions, Sedef Uzuner and Ruchi Mehta 7. Focusing on the social: Research into the distributed knowledge of novice teachers in online exchange, Melinda Dooly 8. Perceptions of Humor in Oral Synchronous Online Environments, Natasha Anthony 9. Face-to-face and Online ELL Writing Tutorials: A Comparison, Jason Vickers Part 4: Informal Online Learning 10. Rapport Management and Online Learning: L2 Socialization in Livemocha, Adrienne Gonzalez 11. "We don't have to always post stuff to help us learn": Informal Learning Through Social Networking in a Beginners' Chinese group, Marie-Noelle Lamy Index