Given the public role of libraries and the fact that bibliographic metadata (i.e. the material in library catalogues) doesn’t seem that exciting from a commercial point of view you might think that, of all the types of data out there, it would be bibliographic data that would be the most open. You might even think, given the public-spiritedness of librarians, that this is the kind of area where not only could it be openly available but it would be openly available (in nice little bzip or gzipped dumps …).
In fact the situation is quite the opposite. Most libraries appear to implicitly or explicitly exert rights over their data with some libraries licensing access to their catalogue data for substantial sums of money. The following lists some of the examples (both closed and open) that we know of ...
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.