Why is is so cool to hate on QR codes lately? I've heard Merlin Mann and Marco Arment rag on them pretty often on their podcasts. I don't get it. No matter how ugly, it's still a better way for me to get to your website/app from a physical item (bottle of wine, print ad, whatever) than having me type out a URL....sure they are stuck a bunch of places that make them ugly or inconvenient to actually read....but so are URLs and phone numbers. I'm way more likely to scan a code than open a browser and type out a URL or even worse make a note/take a picture to remember to look something up later, there's pretty much no chance at all that I will call a phone number if that's all that is listed. The code (when implemented properly) takes me directly to what I want with almost zero effort on my part.
But I may be some kind of weirdo, I think think QR codes are kinda cool looking anyway, at least more so than (800)-999-9999 or http://www.foo.bar
ComScore releases a lot of stats about QR code usage and people actually do use them quite a bit. I find them useful, especially when the alternative is typing in a URL that's 100 characters long.
Once something becomes ubiquitous, the complaints about it being overused or misused become similarly common - and as someone has already pointed out you can always get upvotes/likes/what-ever if people agree or just if you moan in an amusing manner.
But I may be some kind of weirdo, I think think QR codes are kinda cool looking anyway, at least more so than (800)-999-9999 or http://www.foo.bar