Would you consider a non-privatized domain register coinciding with the paypal name and email a form of cyber identity. Or do you suppose a would be account hacker could easily go through the steps to both get a website in the stolen accounts name (or if the web has already been established just cite it) and convince the BTC seller his identity? A paypal account from an email address via the non privet site would either mean the user is legit or they also has access to the stolen account users webhost.

If the webpage is established and not an obvious flybynight it would increase trust but not by much....

Any other thoughts on possible cyber identification to verify a paypal accounts owner.