Microsoft is working on privacy functions in its browser,
notes the BBC:
By clicking a button, users of IE8 will be able to limit how much information is recorded about where they go online and what they do.
As are the others.....
By comparison Apple's Safari browser already has a privacy mode and developers working for Mozilla, creators of Firefox, are reportedly working on a similar feature for future versions.
Other browsers, such as Xerobank, take a more thorough approach to privacy and try to anonymise all web use.
I forget who it was predicted about 18 months ago that privacy would be handled by the independent Browser companies, as no-one helse has the motivation (usually the opposite in fact - look at how the Popup scourge was fixed). Props anyway......