The Chemweb.com page directs would-be visitors of the Chemistry Preprint Server to a new site, the Preprint Archive, which includes Elsevier's mathematics and computer science preprints as well as the CPS. Registration is required. Further down the page, however, one finds this notice:
Despite their wide readership, the Chemistry, Maths and Computer Science research communities did not contribute articles or online comments to the Preprint service in sufficient numbers to justify further development. Consequently on the 24th of May, 2004 the three Elsevier Preprint Servers--Chemistry, Math and Computer Science--stopped accepting new submissions to their sites. The current site is now a freely available and permanent web archive for those research articles already submitted to the Preprint Servers.
Posted by
Garrett at 9/14/2004 02:46:00 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.