@Fraser
I use FF primarily because of these two extensions so I'm dissapointed. But I'll still use them cuz the options are horrendous -- at least to me.
And I don't know what ANY of your examples relate to. I'll read ads that pull me in. I stop visiting websites that push crap out.
I've cut off Flash-driven sites because they don't let me use the web the way I want, only the way they want. What good is a tab-based browser if you can't right-click to open an item to a tab?