For info, (Master_mas and Mjsoul, take note), here's an extract from Wikipedia on the subject of addiction :-

"The term addiction is also sometimes applied to compulsions that are not substance-related, such as problem gambling and COMPUTER ADDICTION. In these kinds of common usuages, the term addiction is used to describe a recurring compulsion by an individual to engage in some specific activity, despite harmful consequences to the individual's health, mental state or social life."

Of course, this wouldn't apply to any of us QLers, would it now? ;-)