There are almost 7,000 QR Codes for Animal Crossing: New Leaf (Nintendo 3DS console)! The number is biggest in the world! We attached tags of The Idolmaster and Tiger & Bunny, Final Fantasy, Dragon Quest, etc. We show images in Flickr/Pixiv/Twitter/Twitpic/Twipple/Yfrog.
I found this glorious website filled with Animal Crossing: New Leaf QR codes !