In Chrome you can right click the icon and choose "update filters" which fixes a LOT of ad problems on certain sites immediately. In Firefox right clicking does NOT offer such an option. Need this BADLY!

So far it seems to be working wonderfully, however I have not had it long enough to warrant a 5 at this time

It works well, however it resets either by default or by Google-Youtube by design. Have to set filter-preference after signing on to YT.