Are you a Web addict?

Dr. Nathan Shapira of the University of Florida's Evelyn F. and William L. McKnight Brain Institute recommends considering the following criteria -- MOUSE.

• More than intended time spent online
• Other responsibilities neglected
• Unsuccessful attempts to cut down
• Significant relationship discord because of use
• Excessive thoughts or anxiety when not online

How much time do you spend online at work? Is it always productive time?