ABSTRACT
Ⅰ. Introduction
Ⅱ. Theoretical Background and Hypotheses
2.1. External Boundary Spanning
2.2. External View of Organizational Online Communities
2.3. External Boundary Spanning
2.4. Environmental Scanning
2.5. Community Fluidity
Ⅲ. Methods
3.1. Data
3.2. Measures
Ⅳ. Analysis and Results
Ⅴ. Discussion
5.1. Theoretical Contributions
5.2. Practical Implications
5.3. Limitations and Future Research
5.4. Conclusion
Appendix