I wrote this a long time ago; it's imperfect, and full of bugs,
I'm sure.  It crashes fairly often, too, but seems to work for
simple things.  Conceptually, it's like what Geoff posted,
only implemented as a filesystem instead of just a simple
file descriptor in /srv.  The idea is that it could thus be run
on a central CPU server and imported all over the place,
effectively giving network write service for free.  If someone
wants to clean it up and mail it back to me, feel free; I
never finished writing the ACL stuff (I'd probably do it
differently now, anyway).  Maybe in a few weeks I'll have
some time to clean it up some more and we can stick it in
the distribution or something.

To run it, compile writefs.c and put the binary somewhere.
Run it on a CPU server when it starts up.  Copy writelstn
and write somewhere, and modify them as needed (for
instance, to import /mnt/writefs from the CPU server if needed).
Run writelstn in a window somewhere to receive messages
(I usually run it in a `win' under acme) and run `write user' to
send messages to others.

	- Dan C.