Just been trying out a blogroll export/import and noted two minor issues:
1. The export doesn't include link descriptions. Any suggestions on creating a hacked version of wp-links-opml.php that includes this data would be very welcome.
2. The Blogroll Import via URL doesn't accept a query string, so it's currently not possible to run, say, http://domain.com/wp-links-opml.php?link_cat=3. The only current option to use run the script plus query via the browser, save the page and then import from the local machine - which could be 2 steps too much for many users.