Anyway Feedback provides simple controller with 2 buttons(Useful and Useless). Users can send feedback to specific post or comment.
What you get is amount of positive feed backs and negative ones per post types. Typical usage is for FAQ. You could know if your FAQs are usefull or not.
Sidebar also supported. You can display sidebar which includes the most popular posts per post type.
If you have some request, feel free to contact me. For experienced developper, I’m waiting for pull requests on github.com.
NOTICE Requires PHP 5.3 and over.