Carl Bergstrom, Eigenfactor: Measuring the value and prestige of scholarly journals, C&RL News, May 2007. This is the first full account of the Eigenfactor as a measurement of citation impact, its algorithm, its intended uses, and its advantages over other impact measurements. I won't post an excerpt because the article doesn't directly touch on OA issues. But I will point out that Eigenfactor results are free of charge.
Posted by
Peter Suber at 5/25/2007 09:50:00 AM.
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.