They are used to track people and their activities and that makes many people uncomfortable. Cookies can potentially be used to build detailed profiles of your interests, spending habits and lifestyle. An innocent use of this information might be to target advertising campaigns to specific groups or individuals. However, it is scary to contemplate the fact that some individual or group might be able to accumulate information about our private activities and personal preferences. There is a possibility that some unscrupulous group could potentially accumulate such information and sell it to companies to be used for their own purposes.
Cookies are like a personal tag or tracer .
Some people see this as the most invasive of privacy. However, you must realize that every time you log on to a web site you give away a lot of information. If you are concerned about accepting cookies, you can change the settings in your browser regarding cookies. Most versions of Netscape Navigator and older versions of Internet Explorer have three different settings. You can disable all cookies, accept all cookies, or have the browser warn you before accepting a cookie.