Source for America (OSFA) represents more than 1,500 businesses,
associations, non-governmental organizations, communities, and
academic/research institutions who have come together to support and
guide federal efforts to make the U.S. Government more open through the
use of free and open source software.
I'm beyond pleased to see this taking shape. You can hit the link above and contribute to the discussion. The open government initiative should be based on open source software wherever possible, otherwise it falls short.