Creating several forms

The answer is “yes” and “no” at the same time.
Usernoise was designed as a site-wide feedback form, so it does not have any mechanisms allowing to build page-specific forms. BUT: there is un_feedback_form_body action available that allows you to add your custom fields below existing ones, un_validate_feedback validation filter and un_feedback_created action, those allow you to customize the form pretty deeply. You’ll face with the problem of determining how to tell at which page the form is loaded – but you can use HTTP referer to do so. In 0.4 release I am planning to revert to loading the form along with the page without an ajax call, so it will be a bit less complex.

And somewhere in future, I am planning to include some kind of form builder UI into the admin area allowing to customize the form without hand coding.