Johnstone though is wary of legislation that could go about this the wrong way, criminalizing stupid, juvenile behavior or creating regulations that will be hard to enforce.

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"There is still a stigma associated with this pastime, " says Stefaan de Keersmaeker, a 41-year-old information-technology expert from Melbourne, who founded The Older Gamers because he "got fed up with all the juvenile behavior" from younger players online.

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