Recently my usual addon crapped itself thanks to FF update, so I desperately wanted to like this one - and it is indeed very neat and simple. However, this was also my experience: installed it, played around for 30 mins to make it look and feel as I want to - screenshot of a webpage stopped working after the 2nd website I put there (out of total of 15 dials). No big deal. Tried refreshing restarting nothing happened. In the end tried to use the refresh dial screenshot option - which for some reason made my currently visible dial screenshots disappear. I tried to refresh 5-6 dials at the same time, which resulted in instability had to forcefully close FF. And after that the addon died. All i see is a black screen, even after I reinstalled the addon. The new tab is just blank with no options or things to click on. Real shame as this is all I want in a dialer - to be simple and quick!