After seeing a blog entry about the confusion about those orange RSS buttons (why do they say XML instead of RSS? Yes, they're XML but they're only ever used to signify RSS feeds), I figured I may as well help out.
Feel free to snag this image if you want. No credit needed (well, for me, at least - all I did was take the big graphic at the blog entry and combine the XML/RSS buttons into one and added a slash), but please download it to your own server. It's available in both GIF and PNG (although the PNG version is slightly larger in filesize).
And yes, the button is slightly taller than the normal XML button. I can make another version if need be.