Privacy Guardians Worried
Once you've clicked on a free-offer outlet, you've entered the "click stream." Marketing companies can collect data about individual consumers without having them register or fill out an information form. And while this supertargeted marketing can provide prospective customers with useful information, it also leaves room for abuse.
Currently, many marketers use only aggregate data. Information about individuals is released only with consent, according to marketing officials. Commercial online services, including America Online, Prodigy, and CompuServe, offer a privacy option that tells providers that the user does not want his or her name sold to marketers. The Internet at large, however, offers no such option.
So, caveat emptor.