[Crypt]

I'm guessing that if it's full screen, then websites can see that two visits from tor exit nodes but with the same resolution/size could possibly be the same user. And therefore you're being tracked and can be the 'victim' of targeted ads.

No lol.

HTML5 canvas image extraction (as tor calls it) can be used to fingerprint your computer.

https://www.torproject.org/projects/torb...inkability

Scroll down a little bit to read about it.