Open source is not only found everywhere – running the Internet, powering supercomputers, servers, desktops, mobile phones, and in embedded devices – increasingly it is becoming the dominant force in those sectors. Open source builds on the earlier achievements of free software, whose foundation is freedom itself. That freedom is particularly important in the world of online publishing, where WordPress plays a leading role. This talk will look at how the elimination of barriers to disseminating information and commentary has become a major factor in preserving free speech and freedom itself.