From BBC:
A South Korean couple who were addicted to the internet let their three-month-old baby starve to death while raising a virtual daughter online, police said.
An autopsy showed her death was caused by a long period of malnutrition.
The couple had become obsessed with nurturing a virtual girl called Anima in the popular role-playing game Prius Online.
Some psychiatrists still have doubts if Internet addiction exists but it looks pretty much for real in this video:
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