bin/remove_members turns on "userack" by default...
even though it's supposed to use the list config
setting whether or not it should send a message to the
unsubscribers (line 111 in remove_members says "userack
= 1").
is this a bug or has this been done intentionally?
the danger is that even if you have "nouserack" set in
your system, using "remove_members -a" will always mail
all unsubscribers unless you specifically tell it not
to through the command line...
