> I would expect that using e-mail would be difficult to smoothly
> integrate and probably a pain to administer. Rather, I would want a
> more unified and consistent exhange mechanism, so that, for example,
> only one TCP connection need be used.
But this implies, for example, that your Mosaic-like browser is always
running, doesn't it? It seems to me that if you want the remote agent
to be able to notify you whenever it finds something, regardless of what
you are doing, you need an asynchronous protocol for personal
communication, which to my mind means some variant of email....