(originally posted on: http://alancode.blogspot.com/)
This is a great peice of code that del.icio.us provides. The have it setup to that you can use it as a bookmark in Firefox and it sets up to create your link for you.
On the page, after you fill in your info, it kicks you back to the originating page. Very well done.
If you haven't played around with del.icio.us yet, you should.