When I moved to the Bay Area in 2007 to run the Wikimedia Foundation, the first thing that struck me was the eerie absence of women. I'd spent most of my working life at the Canadian Broadcasting Corp., where we used to joke that women took power when the men went off to war in 1939, and afterward refused to give it back. At the CBC, easily half my colleagues, regardless of their gender, were overt, confident, unashamed feminists.