CNN.com Study: Spam costing companies $22 billion a year – Feb 3, 2005 (20):
Time wasted deleting junk e-mail costs American businesses nearly $22 billion a year, according to a new study from the University of Maryland.
A telephone-based survey of adults who use the Internet found that more than three-quarters receive spam daily. The average spam messages per day is 18.5 and the average time spent per day deleting them is 2.8 minutes.