Could be a great add-on, but too frustrating! Rated 2 out of 5 stars

Doesn't work well with smooth scrolling.There should be a pop-up that says, "Are you sure you want to go back?" Perhaps, a control key would help prevent going back -unintentionally- while scrolling.
Too frustrating to continue using. Has Keremonal abandoned this extension?

This review is for a previous version of the add-on (2.6.4). 

Hi Jim. I did not abandon this extension. Thank you for your interest.

I use middle-clicking to go back a lot and never click on back button. A confirmation would make this addon less usable so I do not prefer to implement this.