Google has historically had terrible support for my websites, which are served as application/xml. My pages would show up without a summary, an unrecognized file type, no cached version, and clicking on View as HTML wouldn’t work.

Now, it seems Google is working on XML support a tad. Some of my pages show a summary and a working View as HTML option. No official cache (though, the HTML-ized version is a cached copy) or file type recognition yet, which means they probably still don’t parse or follow my links.