MacOSXHints: Post to a Del.icio.us account from NetNewsWire: “Since I do most of my reading in NetNewsWire what I really wanted was the ability to grab headlines while reading in NNW and post them to my del.icio.us account. I created the following AppleScript to do just that.”

Also note that you can set the very cool Cocoal.icio.us as your weblog editor and post to del.icio.us that way.