Do they offer anonymous payment options? I do not want that my content is blocked, filtered by my actual (world wide unique - only one me really) identity.
The problem for me is that if I provide my payment details, I make myself vulnerable to the person level censoring (as do other users of course). I do not think that this is where the WWW should be going.
So in principle anything that decouples my identity from the access to the content but lets me to pay for it might be fine.
If I provide you my payment details I could not be sure that you will not share my identity (even in a form of an unique id) (or start sharing in the future).