The Citizen Apps website is a very cool initiative that provides a wide range of social media tools for federal agencies to use in their outreach efforts. It provides a framework for blogs, wiki's and discussion forums, to name a few. The intention is to make it easier to engage in discussions with the general public, in true Web 2.0 style.
Accordingly, I'd like to direct your attention to the Acquisition Innovation Wiki. It's an interactive forum where you can discover and contribute content related to innovation, technology development and defense acquisitions.
I hope you'll stop on by and take a look around. Even better, create an account and add some content!