Agency Post-it Wars Spread, as Other Shops (and Even 3M) Join the Fun

Brand sees the skirmish as a nice little ad

There was a time when a big company like 3M might have sent a nasty letter to the agencies waging a Post-it war on Canal Street—telling them to quit sullying its brand name in social posts. These days, though, any company that knows anything about social would be thrilled to see something like this develop.