[t_mann]

Many URL shortening services actually do offer a way of inspecting the URL before loading it. And the issue of URL shorteners is in no way specific to QR Codes (they originated on Twitter, where they are still most commonly used by my observation, even though the reason for doing so has gone away). QR Codes are usually used to point to content on your own domain, so you can control the URL, hence very little reason to use shorteners, which would likely cost you a few visitors.