Cookies

Cookies are information packets that are stored locally on your computer. Cookies are also passed to the CGI program as part of the environment like the query string. On the Internet cookies are often used to remember who you are and what you like. Some companies will work together to add information about you and put them in cookies. Later those companies will put up advertisements based on the things in which you seem to be interested. If you have the right interests and go to the right sites this can help you. If you mess up and accidentally go to the wrong site who knows when all of the junk advertisements will end.