QR codes are getting more and more popular, not only with the big stores and companys, but.. I heard of an urban guerilla activity, printing out QR codes (since it is so cheap, everybody can do it) and replacing them on billboards to be linked to website with critical content about the product advertised or just plain nonsense.. If there is people thinking about this way of “underground propaganda” that means, there is people using the QR codes to make their work worth it.. isn’t it?