This is mind-blowing: the digital adverts by Clear Channel have been hacked for the first time ever. Instead of adverts,…

This is mind-blowing: the digital adverts by Clear Channel have been hacked for the first time ever. Instead of adverts, passers-by saw and could contribute to a collective writing pad. No idea how they’ve done this but big, big bravo to @liegesanspub! https://t.co/4By4f9zWDa https://t.co/oGFAoa46R0

—AdDistortion (@DistortedAd)