response 4 of 4:

Jun 20 02:06 UTC 2003

actually, resp:1 is not entirely true.

it's a technical issue, but sharing the conferences over NFS is not
something that is required.  Also, it's not something that is possible
as M-Net's upstream provider blocks NFS traffic at their routers.

Both Yapp and Picospan have support for shared conferences via email. 
I'm uncertain how to do it as I've never really looked into it, but I
know it's possible.