When you search Google, and click on a link, your search term is sent to that site, along with your browser & computer info, which can often uniquely identify you. That's creepy, but who cares about some random site? Those sites usually have third-party ads, and those third-parties build profiles about you, and that's why those ads follow you everywhere. That's creepy too, but who cares about some herpes ads? Your profile can also be sold, and potentially show up in unwanted places, like insurance, credit & background checks. But there's more. Remember your searches? Google also saves them. Your saved searches can be legally requested,