1. What prompted involvement in open source
a. How did it start, what kind of projects - components of larger project, documentation, seeking assistance, learning
2. How important were elements of open source
a. Collaboration
b. Access to community
c. Access to past exchanges
d. Artifacts - source code, documentation
3. Impact on professional/knowledge development
a. Education/knowledge level at start
b. Did it prompt further formal study
c. Networking (with other developers)
4. Validation
a. Certification
b. Recognition of qualifications
c. "Guru" status