Aha! Mozilla 1.1 supports LINK tags out of the box – try clicking on the “View…” menu option then “Show/Hide”, “Site Navigation Bar”, and finally “Show Only As Needed”. On sites that support it, a little mini-toolbar of navigation links will pop up at the top of the browser window whenever Mozilla spots them. You can also discover which sites have RSS feeds, thanks to Mark’s RSS link suggestion (they’ll be hiding under the “More” folder).
This feature’s been in Mozilla builds for a while, but they never had any GUI options for it because slowed down page loads. I wonder if that’s fixed? I’m still not sure I like it – ironically Mark’s addition means that it pops up on more sites than it’s really useful. In those cases it does eat a fair bit of real estate, and is a bit of a distraction.