PUBLIC MARKS with tags edit & greasemonkey

Platypus is a Firefox extension which lets you modify a Web page from your browser -- "What You See Is What You Get" -- and then save those changes as a Greasemonkey script so that they'll be repeated the next time you visit the page. Editing pages to suit your needs is dandy -- but making those changes "permanent" is the real payoff.

Create greasemonkey user.js scripts by wysiwyg extension