Awesome idea.

Merging Firefox windows without toolbars with the main window breaks scrolling in the merged tab.

Simple and easy to use. Merge to focused window.

The Chrome version of this add-on is more elegant, but this certainly works and is so invaluable I find it hard to believe that neither browser has made it a default capability.

It'd be great if the documentation could make it more explicit that the Merge Windows command gets added to a right-click menu and not the main browser menu. Right-clicking on a specific webpage to find an option that affects all Firefox windows is plenty functional but not intuitive.

It worked, I think.

Does the job. No bloatware.