This is not a new problem. We have two big issues: 1. It is very hard to maintain documentation 2. Document linking is inconsistant, and sometimes a new page is created but the old ones are not removed. Two old examples are /docs vs /catalog and download pages. A new one is get-involved.html . We also need to get QA doc clean up since they duplicate some user doc and are sometimes used as user doc because better doc does not exist.
reassigning endico's bugs to default owner
Closing as wontfix. The initial bug report talks about issues related to maintaining documentation but all developer documentation should now be on MDC (end-user documentation, testing documentation and other types of docs belong on various other sites). In general, any duplicate content still on www.mozilla.org will be dealt with as we go through the archiving process.