People don't scan them in the US because most people don't seem to have a clue what they are. If we spend any freaking time educating the public about what they are and how to use them ( and stopped using those damn proprietary variants) then we'd see a lot of value come out of them.
You don't like QR codes? Fine, then give me some %#$%@$ alternative that allows me to get people from the print version of my stuff to the online version without them having to type in some long string of characters on a weeeee little phone keyboard that everyone makes typos on constantly.
Until someone comes up with a better alternative, maybe we should stop railing against them and start learning how to use them intelligently and respectfully, while making it easy for our audience to consume them.
Telling a spectacular story, as the comic suggests, wouldn't get people to my site nearly as well as a button on the paper that they could reach down and push.
QR codes aren't doing a great job of getting people their either, because instead of educating people about how useful they are and what to do with them, we're letting marketers use them without a freaking clue, while the clueful sit around bitching about them without offering any good alternative.