EFF Says Forget Cookies, Your Browser Has Fingerprints
Found on Slashdot on Monday, 17 May 2010

Even without cookies, popular browsers such as Internet Explorer and Firefox give websites enough information to get a unique picture of their visitors about 94 percent of the time, according to research compiled over the past few months by the Electronic Frontier Foundation.
This means that most Internet users are a lot less anonymous than they believe, Eckersley said. 'Even if you turn off cookies and you use a proxy to hide your IP address, you could still be tracked,' he said.
Although these are old news, it's worth to bring them back to attention once in a while to remind those who forgot and inform those who somehow missed all that.