Internet can be said as the most significant invention of the century. It simplified many annoying processes such as banking and shopping into one simple step that can be achieved at home. Nevertheless, there are some drawbacks. The control of one¡s personal data on net is not as easy as in real life. Technologies on net can make tracking one¡s behaviors and interests without asking for permissions possible. In other words, World Wide Web users may be monitored by someone they do not know. In what ways our personal data are leaked out and whether Internet and privacy can finally co-exist peacefully?
             According to ¡§Reconciling E-commerce and Privacy¡ in ¡§Business Week¡ of 10/05/1998, there are web sites that force the users to give out their personal data such as your name, email address, demographic information, marriage and financial status, interests, hobbies and so on while registering their products. These data will be sold or given to their marketing partners without asking the users for permission. According to the passage ¡§No Such Things as privacy¡ in ¡§Report Newsmagazine (Alberta Edition)¡ of 02/28/2000 Vol. 26, the emails people gives to newsgroups and business web sites may be sold to 'spammers¡, those who send lots of advertisement messages through email to users, especially for some pornographic sites. It may cause extra time for the users to filter these 'garbage mails¡.
             In addition to the information gathered from registration of products and newsgroups, commercials interested in these information uses incentives. In the passage of ¡§It¡s free, but it¡ll cost you¡ in ¡§Black Enterprise¡ September 1999 Vol. 30, the author suggests that there are companies provides free computers and free Internet services. Examples are FreePC and Netzero. The users, in return, have to give out their personal information. They have to promise that they will face the advertisements sh...