Institute of Disruptive Studies... love it... (sorry, I was having a monty python moment...)
The project, called GoogleSharing, is a Firefox add-on that uses an anonymous proxy service that gives Google false information when someone uses services that don't require an account, such as its search, news, and images services, said Moxie Marlinspike , a security consultant and penetration tester with the Institute of Disruptive Studies.
Google collects a vast amount of information about its users, said Marlinspike, who gave a presentation at last week's Black Hat conference. The company collects IP (Internet protocol) addresses, search requests, browser type and more.
More here at yahoo news
About googlesharing: http://www.googlesharing.net/
Also, for web editors who use google analytics, you might want to read Google's data sharing informational blurbage...