A great example of this is the difference in how the WHATWG got a blog and how the CSS working group set one up. In the WHATWG, the idea was floated for a while, and then one day someone volunteered to run it, and the blog was up and running within hours. Anyone (literally anyone) can post to the WHATWG blog (there’s a moderation step that we added to deal with the spammers, but all it takes now is to get onto IRC and ask for the post you wrote to be published). The CSS working group, on the other hand, has been discussing how to set up a blog, and what the first entry should say, and what tool to use, for over 2 months! Nearly every phone call (the group has weekly teleconferences) for the past 9 weeks has had the blog discussed at some point.
more dragging of feet. i suspect some member companies have an interest in making CSS not too powerful.