Google to Yahoo Search search for mRSS goes to yahoo page

It's the last paragraph: "Google supports mRSS, [...]"; mRSS is a link to http://search.yahoo.com/mrss -- it seems like it should do a search, but it 404s to the Yahoo homepage.

It's probably like that because mRSS was developed by Yahoo + mRSS community http://en.wikipedia.org/wiki/Media_RSS