You know what I'd like to see on del.icio.us? A way to filter out bookmarks into del.icio.us. I never understand why people need to bookmark pages of del.icio.us folks or tags. Just subscribe to the dang RSS feed!! Having an RSS subscription is just as good as a bookmark. Even better you don't have to visit the site manually.
Actually, I have a sneaky suspicion that these irritating urls start out as life in browser bookmarks which get exported/imported into del.icio.us.
Of course this is anathema to the del.icio.us way, but power users can wish can't they?