Guildsite admins now have a screen where they can manage a guild application. See an example
here.
Submitted applications will be posted to the forum of your choosing. This allows you to keep the application private if needed.
The initial release allows you to create as many questions as you want. Answers can be set as a dropdown list where you provide the values, a textbox, or a textarea. Any question can be marked as required.
Checkbox, radio buttons, or other features might get added if you pester me enough. :)
Many thanks to
Zent for helping to get this feature implemented.