We look down when we walk. It's human tendency, but not often does the ground serve as a canvas. In terms of marketing, it'sgenius to have your flyers "spill" all over the sidewalk. While I do not condone littering, I do see the content on your flyers.
A much more artistic approach to this sidewalk talk, is the actual art that can be found on the ground. While walking to class I noticed an etching in the concrete. We often see this outside of people's homes. Their children leave their hand prints in the sidewalk and sometimes a dogs footprint makes a cameo. This marking however was different. It was a house. The small childlike sketch of home made me think, why do we draw "house" like this?
Why do we associate this shape with home. It can be as simple as five lines maybe as few as two. It can expand to include a window and a door, maybe even a chimney. But the reality is that many of our homes now, or the houses we grew up in do not look like this. In fact if I were to draw my childhood home it would look crudely like the sketch on the bottom right:
The universal symbol of home is just that, universal. It is everything you need and nothing more. You need walls and a roof, a door to get in and out and a window for vantage. It's so easy a kid can draw it and it's so versatile, we design off it. It can stand as is or it can be modified and adjusted. A square reconstructed, it is a house.