1998's far-clunkier cell phones didn't enjoy the ubiquity of today's versions, but their increasing popularity created new issues. A major one: Cell phone etiquette. By 1998, some 55 million people in the United States had subscribed and plenty were oversharing: Restaurant diners, moviegoers and train commuters all suffered through strangers shouting intimate details in public places. Today, most of the U.S.'s 243 million wireless subscribers don't answer their phone in the movie theaters, but ignoring your lunch date to text or e-mail? That's so this year.