Monica

I did hear about this a while back; it pissed off most of the plug-in creator ecosystem. :-/ Firefox PR folks seem to have a huge blind spot with regards to it; when pressed the best I heard was "Well the new thing is better so people will just change" or "We have to do this because security", neither of which is really true or especially relevant...

Meanwhile, it forced me to switch to Safari and Chrome, depending on who I am that day.