WtF is this thing I see japanese artists sites using all the time ? At first I thought it was instead of the single / album / whatever cover because they did had it ready yet, but now I see it in the Kalafina site, although all 3 covers are also present (in the flash thing of the top page) , or is it some kind of barcode ?
It's called QR code, you can scan it via mobile phone to check the website from your mobile phone. Though most codes from Japan are unavailable outside Japan
