aronson admits management requests cameras, not workers. but when it comes to improving efficiency, faster is not always better. half the time, a manufacturing line's speed is slowed down to improve quality control. in hospitals such as north shore university hospital on new york's long island, cameras monitor how often healthcare workers wash their hands. "they were really washing their hands less than 10% of the time." aronson says within a matter of weeks, hand hygiene - key to preventing the spread of infection in hospitals - improved 80% and stayed that high during a year-and-a-half of periodic checks. as far as employee representation, he says no union has blocked arrowsight from installing cameras to monitor employees. in less than one year, online coupon company groupon moved from massively hyped to a mostly forgotten $4 stock. paul eggers takes us behind the scenes as former groupon employees vent over the rise and fall of company stock. groupon's stock chart is not a pretty picture. from its opening on the nasdaq in november of la