“Etiquette is not, these days, a growth industry. The Internet is inundated with bile in the name of free expression. Television reality shows encourage a thumbs-up, thumbs-down mentality. The allure of instantaneous reaction makes Twitter the talk of the town. Meanwhile, the economic meltdown is melting down manners: More than ever, people who pay good money to see a show feel they have every right to express righteous anger.”