Open Source Creativity - Hackerspaces

Public spaces are emerging where people congregate to share ideas, make cool projects, teach, and brainstorm with collaborators on everything from coding to cooking. With no leaders, they have one rule: "Be excellent to each other." Take a tour of the hackerspace Noisebridge, in San Francisco.

Anyone here actually been at this particular hackerspace? Looks like it attracts a pretty diverse range of geeks (one who passionately pursues skill and imagination).