d3wp

Creates “Give Feedback” button in the right bottom corner of the post page. After click, redirects user to the comment box. 
This technique helps you to increase the number of user feedback
Uses jQuery for setting transparency when you move your mouse over the button (animated).
<h3>Feedback</h3>
http://www.webdev3000.com/

WD3K Give Feedback

Creates "Give Feedback" button in the right bottom corner of the post page. After click, redirects user to the comment box.

Goose Studio

Andreas

Feedbacking makes it easy to comment design and other elements of a site. 
Consider this plugin a public beta, there are known issues, and they can be found at 
https://github.com/GooseStudio/gs-feedbacking/issues
In order to use this plugin unless you are an administrator you need to give your users the necessary capabilities.

Feedbacking – Lets users comment your design – Experimental

Feedbacking makes it easy to comment design and other elements of a site.

WD3K Give Feedback vs Feedbacking – Lets users comment your design – Experimental