Funny you should mention that. I've been working with a friend on something along this line for the last two weeks. We are looking to announce a beta launch here sometime next week. The site is going to be called Democritique. Stay tuned.
In a nutshell, Fourth Branch will act exactly as that: The fourth branch of government. The emphasis on publicizing legislation and providing government transparency has lead us to develop this. Unlike anything to date, we are going to utilize proven social networking practices and focus it on legislation and issues that require public input.
We are looking for any and all comments, criticism and feedback to help us develop quickly. Thanks!