Benjamin Mako Hill is a long-time free software developer and advocate, and was part of the founding Ubuntu team. He is a fellow at the MIT Center for Future Civic Media, and a researcher and Ph.D. candidate at the MIT Sloan School of Management.
Matthew Helmke has been an Ubuntu user since April, 2005, and a leader in the Ubuntu Forums since 2006. He works for a cutting-edge cyber infrastructure project while also writing Ubuntu Unleashed (SAMS, 2011).
Amber Graner is an active Ubuntu community member whose path to Ubuntu activism started as she blogged about her transition to Ubuntu in 2009. She contributes to the Ubuntu News Team, Ubuntu Women Project, and much more.
Corey Burger is a long-term user and contributor to Ubuntu and a former member of the Ubuntu Community Council.