The Royal Swedish Academy of Sciences announced yesterday that the 2009 Nobel Prize in economics to Elinor Ostrom and Oliver E. Williamson. Ostrom was recognized "for her analysis of economic governance, especially the commons". Ostrom's research has touched on many types of commons, knowledge among them. See, e.g.:
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.
I recommend the OA tracking project (OATP) as the best way to stay on top of new OA developments. You can read the OATP feed on a blog-like web page or subscribe to it by RSS, email, or Twitter. You can also help build the feed by tagging new developments you encounter.