CureTogether, launched earlier this year, describes itself as a "platform for open source health research". (Thanks to Michel Bauwens.)
CureTogether is a place where patients and researchers work together, doing open research to find cures. Patients can start feeling better today by connecting, sharing resources, and tracking their health. It’s as private as you want it to be, it’s free, and the aggregate data is open so researchers around the world can collaborate on it. ...
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.