Teacher labor markets are evolving across the United States. The rise of charter schools, alternative teacher certification, and portfolio districts are transforming teachers' access to employment, changing the way they search for and apply for jobs, and may also change the role that social networks play in the job search. However, we know little…

This article examines whether a mixture of virtual and real-life interaction--in contrast to purely virtual interaction--among some members of online communities for teachers is beneficial for all teachers' professional development in the whole community. Earlier research indicated that blended communities tend to face fewer trust and free rider…