With the ClipMarks browser addon, we can clip (easy and extremely fast) all our Webwide splattered contributions, including customized comments, syndicating them to multiple social bookmark-, annotation communities, blogs, microblogs like Twitter and even to DiigoService, which itself distributes to many such communities.
It incorporates a tagging and voting system to facilitate the formation of likeminded people.
Call for collaboration:
It would be great, if interested Meatball wikizens left here their Clip Mark Home Page to join forces, e.g. for ExtremeOpenBusiness: