… “I’m pretty aware of the fact that anything you do on the Internet pretty much should just be considered public,” Mr. Martinez said. While he knows that companies are collecting his data and often tracking his online habits so they can show him more relevant ads, he said, he would like to see more transparency “about what the company intends to do with your data and your information.””Like all privacy matters, it’s something that people need to be informed on,” Mr. Martinez said.Those same questions of data collection and privacy policies are attracting the attention of Congress, too. There is no broad privacy legislation governing advertising on the Internet. And even some in the government admit that they do not have a clear grasp of what companies are able to do with the wealth of data now available to them.
http://nytimes.com/2008/08/11/technology/11privacy.html