Seth's ability to ask the right question continues to astound me - what difference would membership make to your organisation.
Certainly folk like Matthew & co are having to think very differently about how they go about things...
TBH I've never like the idea of "customers" and "consumers" because it puts at a disadvantage to the organisation and its interests and not the other way round.
You see this kind of thinking everywhere - while football [soccer to our American chums] clubs are owned by shareholders, the real owners of the brand are the punters who stand/sit on the terraces, who travel to watch 0-1 away losses in the rain, whose day is brightened/darkened by the latest result: the fans.
Certainly, non-commercial bodies could learn a lot from this. My friend Theo (a catholic missionary) puts it this way:
"If we (the Church) don't serve the people freely, what on earth are we for?"
(though my Mum's parish priest - like too many businesses I come across - seems to think that his service-delivery should be on terms that suit him)
UPDATE: Helge makes much the same point as Seth here (HT Gareth)