Download Festival [10-12 June, Donnington Park] teases some of the line up via a branded QR code on their Facebook page wall.
blackandwhitesquares
The domain dedicated to all things 2D code. If it is black, white, square and grid-like, it should be here. BAWS features inspirational implementations, innovative use of mobile marketing and artistic license with QR code and 2D barcodes.