Still catching on down here Steve.
I have used QR codes in marketing for over 12 months now, and have less than a 1% response. But I will still use them......as conversation starters lol.
I did marketing piece in the Inclean Mag Steve last month, and the marketing department contact me and asked what the 'square blob' was on our full page ad. I was thinking to myself, man alive, if a marketing department at the cleaning magazine company don't know what the heck it is, what chance is the end user going to have?