FYI. There is a ‘one place to call’ for cataloging rule interpretations.
The site attempts to bring all of the rule interpretations for AACR2 available on the web into a single place. They are designed to be used with a current copy of AACR2. It currently includes all of the latest Rule Interpretations from the Library of Congress, the basic proposals from RDA and how this would impact AACR2.