I would not attempt to defend the traditional role of librarians, as information brokers....I would instead support librarians - those that are willing to make the change - by appealing to their role in organizing and making available the content produced by the school or the university. A librarian plays a vital role in supporting each institutions’ contribution to open access. By supporting open access, institutions can save the money they spend on books and periodicals. This helps support the hosting of institutional archives, and helps the institution spend more time and money on the production of quality scholarship.
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.