That brings up another tab which has the default settings: In Google Chrome, it starts on your MacBook or iMac by choosing “Preferences”: And in every browser you can delete them by site or delete specific cookies one at a time too, if you’re that patient. That’s how “remarketing” works, how you do something like a search on and then see adverts for the searched item on dozens of other Web sites over the next few days: all of those ad blocks are coming from the same ad servers and are using cookies to help track what you’re doing and what you’ve done. That tiny ad square? Might be from an entirely different site, which means that site too can now give you cookies. ![]() ![]() ![]() ![]() How does that happen? Because most sites now include snippets or content from other sites (often as iframes) embedded on their pages. In the last few years, sites giving you snippets of data to help retain state, to help the site remember who you are, what you did on the site, your login credentials, etc, has risen to the point that after a surprisingly short period of time, you doubtless have hundreds, or even thousands of cookies from the sites you visit.
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