You would think that this was the doing of 3M who manufacture Post-it Notes.
… but apparently no.
It started when workers at one office at the Ubisoft building in Paris decided to use post-its to create a mural on their windows and send a message to the BNP Paribas bank across the road.
This whole idea went viral. I was in Paris this week and it is hilarious – there are fascinating post-it murals all over the office windows, the fruits of the labour of workers using the quite period of August.
These are the GroupM offices in Paris:
And here a selection of some other murals:
Can’t pay for this kind of publicity.
And apparently the Parisians are not the only ones doing it! Check out this bad boy (check out more flickr photos here):

















These photos were used without attribution or links. Please link back to http://www.flickr.com/photos/ableman/sets/72157594421824427/ or remove the photos. Thank you.
Done, let me know if edits are ok. Apologies for the oversight, always very happy to attribute. Cool pics by the way.
Caspar
Yes and thank you sir for the prompt response.