See also the Guardian a couple of days ago on smiling as a fashion trend:
“It’s an instinctive desire from designers to connect with the consumer,” says fashion commentator Caryn Franklin…. “Recessionary posing means cheering people up. It’s a route to profit. But it made you feel more included, didn’t it?”
Reminds me of Firestone’s “‘dream’ action for the women’s liberation movement: a smile boycott, at which declaration all women would instantly abandon their ‘pleasing’ smiles, henceforth smiling only when something pleased them” (The Dialectic of Sex).