The fact that the Internet is one of the most powerful organizing tools in history is both thrilling and vexing to public engagement practitioners working to create the conditions for more effective public involvement in public life. We know that the Internet supercharges political campaigning and we know that like-minded individuals are more able than ever to connect with one another because of the Internet. But what is still unclear is how the Internet might help build capacity and momentum for inclusive, collaborative and boundary-crossing problem-solving at all levels of public life (from the national level to the local level).