Since cross-posters always (!) read each mailing list's charter before
sending,
it is intriguing to consider that said posters probably also stumbled across
the list's subscription method. This would presumably move the act of
subscription from the realm of "obscure knowledge" and into the realm
of "duh".
there are two pieces to this:
1. it's unreasonable to expect occasional commentators to subscribe to a list
before sending traffic there. (it's completely reasonable to expect them to
read the charter, and any drafts they are commenting on, but not to jump
through extra hoops and to flood their mailboxes with unwanted traffic)
2. it's unreasonable to expect those who post from one address and subscribe
to the list using a different address, to have to know a secret handshake
that puts their posting address on the whitelist.
A simple fix for #2 is to put the instructions for getting on the whitelist
on the WG's charter page, and on any other announcements for the list.
Keith