At that point it becomes a question of whether browsers can be uniquely identified so they can be tracked across sites. If the advertiser can place a cookie fro

At that point it becomes a question of whether browsers can be uniquely identified so they can be tracked across sites. If the advertiser can place a cookie from site A and a cookie from site B, they don't have a way to link them unless the browser is unique. Users who care about privacy are going to have to defeat browser fingerprinting[1]. [1] https://panopticlick.eff.org/ https://panopticlick.eff.org/