Lila Tretikov is the new executive director of the Wikimedia Foundation, the nonprofit organization that operates Wikipedia and supports its volunteer corps. Her new role includes overseeing the fifth most popular site on the web and a community of 80,000 active Wikimedians and a mission to make the sum of all human knowledge freely available to all. Top of her agenda is to lead the community’s struggle to increase diversity: 87% of Wikipedia contributors are men, according to the site. The widely respected Moscow-born Tretikov is a Bay Area technology leader and an active member of the open-source community for the past 15 years.