In this music promo, various youth pop icons advance Coca-Cola's Smile Petition, which is about making the Internet a happier medium for all.In this music promo, various youth pop icons advance Coca-Cola's Smile Petition, which is about making the Internet a happier medium for all.In this music promo, various youth pop icons advance Coca-Cola's Smile Petition, which is about making the Internet a happier medium for all.