For example, I&#x27;m browsing for tyres, I get that it knows that, it&#x27;s even useful sometimes in helping making a purchase, but then, I do it, I&#x27;m done looking, I have tyres, regardless of where I got them, now when I see tyre ad&#x27;s they are even more annoying, oh look, there&#x27;s a better price than I paid 20 minutes ago, so... can I just click something to say, I have that thing, find the next thing to show me. For the advertiser having a user click it even if they had not bought the product might still be a useful flag, the user would learn that it&#x27;s not going to stop adverts altogether, just move things along, if they click it too much, they&#x27;ll end up back where they were and the advertiser will have learnt some things.