Companies try to personalize web site experiences for their visitors. Some remember your login name and password for your convenience upon subsequent visits.
Others offer news, stock quotes, and weather tailored to people's interests and location. This is done with a cookie, a small file created by the site, that collects specific information about your preferences or web browsing activities and stores it on your PC. Allowing all cookies, however, is unacceptable for those who care about privacy.Tracking networks such as DoubleClick and MSN LinkExchange use cookies to monitor which site you were on when you clicked a particular banner ad and what you did once you got to the advertiser's site. They can put cookies on your PC and then read them across many sites - tracking your surfing habits and building a profile about your preferences.
Though this can be alarming, you are not left without the option to take control of the cookies that are used to invade your privacy. You can completely close this privacy gap as long as you apply basic cookie management techniques. Cookie filters will allow you to accept or deny each cookie upon arrival. Cookie filters can also be instructed to always deny "third-party" cookies - those that do not directly originate from the site you are currently visiting. Third-party cookies are most often used by advertisers and marketers.

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