
TBWA was the last agency to move to Lisbon’s advertising district. With their top competitors already there, they decided to showcase their creativity by turning 19 windows of their office into a 36m long twitter billboard.
The video below does not explain how exactly the people were encouraged to send in their tweets, but it does show that people tweeted about politics, taxes, Europe, Merkel’s visit etc. In the end all the window tweeting created quite a stir in the local media.

