"Uma ideia para os seus shoppings..."

A bright promotional idea

Near Paris, a commercial mall has decided to create a laughing sound ambiance instead of a musical ambiance. Results were amazing. Turnovers of stores increased.
One store even proposed a 10% discount to each client smiling when paying his or her invoice to the cashier.

Recebido por e-mail, do Gonçalo, a quem agradeço.