Teh Missus and I also recently spotted the sign and chortled over its sheer futility, and the somewhat naive faith its erectors have in the Power of (Inept) Signage.

I'm intrigued by the untold story: what if you'd said "Yes, I am a journalist"? Perhaps you'd have been subjected to some rant over uncaring authority making it difficult for hardworking traders to earn a living.