Honest question: why would anyone pay for this? Several dollars a month for a QR Code? Is this a few bucks a month for one code or for access to the API to make unlimited?<p>I don't get it, but maybe I'm not able to think of the business applications.
My 2 cents: Not the worst idea, but you should really explain what it does on your web site.<p>Also a subscription per QR code is not very attractive and it's hard to keep track of multiple codes for users. Selling memberships (such as 5 codes for $9/mo, 20 codes for $19/mo etc) could be a better model.
Thanks all for the feedback! I went ahead and made codes with the domain as the message to be free. As a potential scanner of QR codes, I feel like this is more/most helpful - I kind of want to know what I'm scanning before I scan it.