An insider from the W3C Working Group responsible for maintaining and extending the CSS spec has taken to offering his viewpoint on the process, and detailing how the group operates "in reality". He discusses the roles people play within the group, how communication is managed, how decisions are finally made, how modules of the spec are broken out and how the spec itself is created.
Most interesting is the final installment in the series, which highlights sources of inspiration and innovation. Advocates for implementation, design and standards each take the lead at various points throughout the process. This is valuable insight into the fact that innovation can come from any angle, or that "...to pretend that useful innovation can only come from one source is to be blind to the reality of crafting a Web standard."