Panopticlick – How Unique, and Trackable, Is Your Browser?
> one in 506 browsers have the same fingerprint as yours.<p>So is this good or bad?<p>Some time this year, I'm planning to write a browser add-on which will send random (legitimate, from real browser versions) header combinations of the user agent (+OS) and accept headers. It can be semi-random, e.g. send the same headers to the same host during one visit. Combine it with the NoScript addon, use the RequestPolicy addon, block 3-rd party cookies, tell the browser to delete the cookies and local storage on exit, use plugins only in "on-click" mode (or don't use plugins), don't send "referer"s (or send fake "referer"s), use Tor for HTTPS sites (and sites that don't need authorization), and this will make hard to track you.