Valley girls: Silicon Valley's 'intentional communities' are cutting-edge communal-living compounds where tech-titan wannabes launch companies from the living room couch, fund each other's startups, and seek to change the world. For a handful of brainy, ambitious women, they're also home

When Joanna Bresee, a brown-haired, hazel-eyed 26-year-old, arrived at 21677 Rainbow Drive in Cupertino, California, last April to meet six prospective roommates for dinner, she was nervous. The accomplished group [...]