Platform for a Public Commons of Geographic Data

I'll try to write up more later, but another interesting direction to head would be to have GeoServer 3.0 serve as a platform for hosted Geospatial Data Commons implementations. There are some great ideas on this in this paper by Harlan Onsrud, Gilberto Camara, James Campbell, and Narnindi Sharad Chakravarthy: http://www.dpi.inpe.br/gilberto/papers/commons_giscience2004.pdf