++ What is a slug?
Derived from slugs in newspaper editing: http://en.wikipedia.org/wiki/Slug_%28production%29
++ Slug specification for Horde
++ Autogeneration
++ !JavaScript support
++ URL rewriting
a few usability enhancement ideas:
javascript to auto-generate the slug based on the form title would be nice. Similar to how EE does things, when the slug field is empty, as a user types in the page title, the slug is generated, converting spaces to underscores or hyphens (could be config, or default to underscore). Once the slug input has a value, changing the title doesn't change the slug.
display a warning if a user tries to change the slug after a form has already been saved ("Warning: changing the slug will cause the link for this form to change.")