From: OCLC Updates. February 26, 2008.
WorldCat.org users who want to keep tabs on lists of items created by fellow users can now do so without having to return to the site: Public WorldCat lists are available as RSS feeds that can be monitored using any RSS-capable service or software.
RSS (Really Simple Syndication) is an information format used by news-media sites, blogs and other Web services that are frequently updated. RSS feeds typically carry brief summaries of the information currently available at a specific Web location, so you can see what’s new without having to view the site in a browser.