Privacy: Do you leave "fingerprints" when you surf the web?

"We address the question of whether humans have unique signatures - or clickprints - when they browse the Web...our results suggest that the answer to the main question is ‘most likely’, given that we observe reasonably accurate user predictions using limited data." -- from the website of The Wharton School of Business/University of Pennsylvania and the Graduate School of Management, University of California-Davis. <http://tinyurl.com/yfym4l>