Tracking cookies are supposed to tell website owners and advertisers about your browsing behavior and what you’re interested in. It is then used to personalize your web experience. Oftentimes that means that you see customized ads, matched to your interests. Ultimately, the cookies put together a lot of information about you and store it in a profile. That may sound convenient but, unfortunately, these profiles aren’t necessarily accurate. In the best case, that means that you get less relevant ads. In the worst case, the information you see on some websites doesn’t fit your needs and expectations. Also, be aware that your profile can influence, for example, the prices at which products and services are offered to you.