Trusted proxy UI strawman

Martin on another thread: "The big hole in this discussion is the user consent question.  I find
the answers presented thus far unsatisfactory.  Is there some new
information that can be shared in this regard?  Or, are there new
technical proposals that don't suffer from a dependency on users
making correct decisions?"

I agree. Here's a straw man to get the discussion going: http://caffeinatetheweb.com/presentations/trusted_proxy.html.

Thanks,

Peter