Knowledge Sharing in Online Communities: Learning to Cross Geographic and Hierarchical Boundaries

The authors acknowledge senior editor Samer Faraj and the reviewers for their helpful comments on their manuscript. Portions of the paper were presented at the 2011 INFORMS Annual Meeting, 2012 Organization Science Winter Conference, 2012 Conference on the Carnegie School of Organizational Learning, and 2012 Academy of Management Annual Meeting. The authors thank participants in these forums for their thoughtful comments. The authors would also like to acknowledge the the Center for the Future of Work at the H. John Heinz III College and the Center for Organizational Learning, Innovation and Knowledge at the Tepper School of Business at Carnegie Mellon University and the National Science Foundation [Grant 1111750] for their support.