I use uMatrix and uBlock and am a very big fan of those addons but I figured I'd throw this on top and see what happened. It doesn't seem to have done anything detrimental to any of the sites I like to commonly browse and in some cases I can see an indicator on the icon showing that it's blocking something but I am not seeing any way of showing exactly WHAT it is blocking. It would be nice if it gave more information on the little drop down menu when you click the icon as to what it is actually doing.