Microsoft is testing a new version of Internet Explorer that allows people to surf the Internet without leaving a trace.
The beta version of Internet Explorer 8 allows users to engage a mode called InPrivateBrowsing. It covers temporary Internet files and cookies, and it stops a list of visited sites from being stored on the computer.
Companies, including Microsoft, use that kind of information to target ads to users. The InPrivateBlocking mode takes it further, blocking certain types of ads and third-party content.
Microsoft's JJ Richards says users want "transparency, trust and control with respect to the sites they visit." Mike Zaneis of the Internet Advertising Bureau says the technology could destroy small sites that rely on advertising.