It seems to me that, regardless of what blogpost author is going (or not going) to do, we can draw a lesson or two here for our own products/services: take away freedom of choice from your customer, and he may quickly become a pissed off and lost customer to you. You have to be very careful in estimations of potential profits and losses of your marketing efforts. Customers may not care (nor should they, actually) about your business or marketing strategies. (Though I'm absolutely sure that Visa is benefiting a lot right now and will not suffer any long-term losses because of this campaign.)