Re: opes and technology picks

[Markus Hofmann]

Brian,

> Because both the content originator and the content receiver should be
> able to veto (say) ad insertion.

What about services that are executed only on behalf of the content
receiver? Virus scanning might be one example.

Other examples might be services that are authorized and performed on
the REQUEST issued by the content receiver (as opposed to the CONTENT
itself). Here, it seems sufficient if only the content receiver
authorizes the service.

-Markus