I would only use this if the first time I appeared on a website it asked me whether I wanted to add it to the list of sites I wanted to explicitly support. Tha

I would only use this if the first time I appeared on a website it asked me whether I wanted to add it to the list of sites I wanted to explicitly support. That may seem intrusive, but otherwise this is going to (further) encourage content farms ripping off Wikipedia or just posting random material and optimising the hell out of its rankings (yes I know Google actively tries to stop this, but it just doesn't work well enough). It's really important to distinguish money coming directly out of my pocket at someone else's whim, and advertising, where I need not purchase anything if I'm not interested.