I suspect that it is workable but with increased effort; maintaining a
global namespace is increasingly difficult the larger it becomes. Incidentally, there is no reason this "certificate as token of legal
jurisdiction" system cannot be implemented in conjunction with the petname
system. Personally, I would feel even more comfortable with an
introduction to Paypal from a friend *and* a visible identifier indicating
that this Paypal is also a registered legal entity in Canada (signed by
the government, or governement approved CA, for instance). I would
initially award a greater degree of trust to such a "Paypal" because of
the legal recourse I would have at my disposal.—Sandro