I just subscribed to the W3C mailing-list, as joining the group was _a bit_ too complicated when your organization is not yet part of W3C (do I own any rights etc. hell if I know..). Anyway, I very much second the initiative and hope this will go somewhere! If this is more a people's issue rather than a technical one, why not first have major parties at least subscribe to a common communication platform? (I also went to visit github/markdown but found no way to subscribe there..).

Very nice. My thought on other implications (Collective Code Ownership..) in a buzz message: http://www.google.com/buzz/cmuller13/DC8EaHNGkNv/Creating-Software-Assets-see-URL-below-A-very-nice