Abstract
The authors created a learning community using the social networking service (SNS), where pre-service teachers can communicate online by writing diaries and exchanging comments in order to promote students' reflection on the pre-service teacher training, and to provide social support and a positive teaching and working attitude during the training. A classroom evaluation was conducted which confirmed that pre-service teachers did use the SNS to exchange social support among themselves. Sharing various experiences and opinions, by exchanging diaries or comments, promoted the pre-service teachers' reflection on their daily working experience. Furthermore, practical knowledge from other pre-service teachers who were receiving on-site training at schools served as foresight to pre-service teachers who were yet in earlier stages of preparation, and served as useful information for members training simultaneously but in different locations. It provided them with a positive attitude toward their training.