(Let’s hope that this is deemed relevant and I am not subject to harsh punishment)
Specifiction is a great way to widen participation, but all of these means so far have some similarities in that it is difficult to imagine what would happen if even 1% of developers suddenly actually got involved in Web Standards. Since one of the aims of the Extensible Web Manifesto is to dramatically increase developer involvement, I think we need some new thoughts and experiments in how to accomplish this.
A few of us are putting together pilot programs, and I’ve written about it here. I’m interested both in your thoughts, as well as just spreading word to get people thinking about the problem above.