I totally agree with you that using proprietary links like that goes against everything that QR codes are about - whats the point if you are restricting users to one type of reader.

I'm also surprised that marketers seem to be just using the url function of QR codes, why not use the other functions available across all readers.

In case marketers reading this dont know the other QR functions I've put together a 60 second "dummies overview" here at http://www.Cognation.net/QR

Cheers,
Dean