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

Feedbacking – Lets users comment your design – Experimental

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.

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