Porn browsing, meanwhile, is much better done with a secondary dedicated Chrome profile.
I would recommend actually using it, though—with a dedicated porn-browsing Google Account, that you created once upon a time in an internet cafe, using Mailinator or the like as the recovery email. After all, nothing gets people to keep digging more than a layer of anonymity; and nothing gets people to stop digging more than finding what seems to be a real person who "uses" a bunch of services like Google, Facebook, etc. all with the same email.
That said now that I know banks have google analytics in them, I really wonder whether I'm better off trusting the extensions.......
I use little snitch on mac, and I still continue to get Firefox connect dialogs for private tabs long after they were closed.
Safari on mac does not exhibit that behavior.