Geoff --
Many thanks for all you've done for the movement! You helped take the WMF to a new level of professionalism, built a fantastic team, and led it during some of the most pivotal moments in the organization's history. During our years of working together, I deeply admired your dedication to continuously making things better, providing mentorship to your team and across the org, and deftly navigating the complexity of the wiki world.
Above all, you embodied the organization's mission and values every day, whether it was about free speech, transparency and inclusiveness, free culture, the threat of global surveillance, or any other issue.
YouTube is lucky to bring you on board, and WMF is lucky you've built such a great team to take things from here. Congrats and best of luck! :)
Warmly, Erik