My answers are a bit contradictory, because none of your radio options quite fits. I don't in principle care who knows that I visit web-pages, but I do (attempt to) block Google and Facebook. It's partly the difference between "anyone" knowing and "everyone" knowing. It's completely fine by me if website owners track my visits so they can measure how effective their website is, and it's completely fine by me if they outsource the tracking to Google, advertisers or a specialist analytics company. What I do care about is when these companies start aggregating the data and attaching it to my identity, and particularly when they start effectively broadcasting the aggregated data. This is why I'm annoyed with Facebook and Google, because they will tell the world that I endorse everything I ever browse if I don't spend a lot of effort guarding against that happening.