I agree with Shyra. If any system of funding for CD is setup, it should definitely be an optional thing, without any affect on... anything.
I would willingly donate to CD, but like many others I don't have a credit card, so any system should probably allow the use of cash. Maybe just an address to mail stuff too. To prevent getting on all kinds of fun lists, you could make it a member's only thing. If you really want to cut down on it, maybe to see it you have to have
x (10ish?) posts.
Or whatever.
