Rated 5 out of 5 stars
The extension, I use most often. Crucial if you run a wiki for example. Simply most have. Unfortunately it now is broken and cannot/will not be fixed. I wonder if breaking useful extensions will help keeping people using Firefox. People like me need to optimize time, not display speed of useless web sites. The latter are made for Chrome users.
Workaround: install an old FF version or replace with more complicated solutions.