Heather Morrison has blogged an estimate speculating that the number of articles published in gold OA journals in 2008 will be double the number published in 2006.
Posted by
Gavin Baker at 9/23/2008 02:47:00 PM.
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.