Adblock that! This is pretty alarming actually - that advertisers are willing to go to such lengths, perhaps excuse my naïveté. The receiver could be someone el

Adblock that! This is pretty alarming actually - that advertisers are willing to go to such lengths, perhaps excuse my naïveté. The receiver could be someone else's device eg next door. Sure it has implications for an activist in London using tor but what about the rest of us? How can I easily tell whether a page is listening? Feedback maybe?