(click images, via)
The first guy had a brilliant idea.
But then Frank Jenkinson (probably not his real name) did what all good copywriters and art directors do in a pinch: he stole it, and made it better. Or did he? The first execution is simpler, and it shows nice respect for the sidewalk space. Which do you think is better? They're probably both "art" projects.
Previous creative homeless man sign: "Parents eaten by pigeons."