I enjoyed your keyntoe at OSCON! I think it's definitely important to be aware of the culture we create in our projects. Alienating any potential contributors, regardless of gender, is bad for the health of the project. Initiatives like the kindergarten for developers to get up to speed in a non-judging environment are a great way to attract new developers who might be frightened of all the established process. We're doing something similar in Mozilla, our channel is #education (since it was primarily targeted at students). It's great seeing people get interested and becoming contributors who might have otherwise been scared off just by being too frightened to ask their newbie questions in the development channel.