What is it like to go blind? Banners get really creative in this campaign for White Cane NGO, an organization for visually impaired people, out of McCann Belgrade. The campaign orchestrated a synchronized blackout on websites in Serbia, using takeover banners that turned everything dark. Users also found that their cursors were transformed into white canes -- and a confusing world of fragmented sounds and voices awaited them. The banners linked to the NGO's site.