Thanks and a good read. I might add that for new users the TOR Browser Bundle will handle this for you out of the box.
Thanks, I've sometimes thought that a better approach than blockers (even selective), is to have a browser that would lie furiously about its characteristics - or at least, be very economical with the truth, and offer a very vanilla response which was close enough but prevented any meaningful fingerprinting (e.g. with add-ons, fonts and so on). Really, the only things remote services need to know is whether you have flash or not, and what major font-sets you have.
Thanx for the info etc ! I installed the FF add-on CanvasBlocker, on portable FF v27. I set it to block Everything & tested it on the test www & passed. Doing that hasn't affected viewing etc Any other www's i've tried so far = Nice.