Has your phone got a QR Code reader? If so, point it at this image and see where you end up!
QR Code stands for “Quick Response Code” and is a form of bar code optimised for quick decoding by. As ever, Wikipedia knows more about this sort of thing than me: http://en.wikipedia.org/wiki/QR_Code
To generate your own QR Code, visit http://qrcode.kaywa.com/