This is a unique Tweematic-based mosaic that celebrates the 20th anniversary of U2’s Achtung Baby and invites fans to join/create a mosaic that eventually gets printed and presented to the band.  Because the Mosaic-engine support such features as high-resolution bring output, it is possible to create large post art (autographed by artists for example) that make great giveaways.

600_u2_mosaic
Here is a similar application were (in partnership with radio) fans are able to win an autographed mosaic post they are part of.

600_cr_mosaic