If you've ever overheard a coworker's loud cell phone conversation or become nauseated watching one talk with a mouthful of food, you are not alone. Etiquette experts say a lack of social graces and general rudeness has become all too common in the workplace.
  The line between what is acceptable and unacceptable is blurring as a new generation of employees enters the work force, bringing with it their use of personal technology—cell phones and MySpace, for example—and a more casual attitude and fashion sense.
  The boon in bad manners has been good for the etiquette business, whose experts are finding their talents in demand. Businesses are also discovering that polishing their employees' behavior pays off in increased productivity, better sales and a more cooperative workplace.
  Maria Everding, who has taught etiquette for more than 20 years, trains and certifies at least 10 consultants a month, up from an average of four just two years ago.
"There is definitely job security for me," Everding said...