People probably realize that if they’re online or use a mobile device, they’re being tracked. But what most people probably don’t realize is just how much data is being collected about them for the purpose of targeting ads at them. At some point users will rise up and defend themselves. At that point, what will advertisers do, when they no longer have the data for targeting or are no longer allowed to use the data they already have in such loose and unrestricted ways? Let’s investigate.