Kupstov and Benga said they started chatting on an online parents message board about the methodology after the first errors surfaced.

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The girl from Worthing began chatting to a man online who then threatened to upload camera footage on the internet if she did not do what he wanted.

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And finally, an auto-chatting "chick" on social networking website Renren is the latest fad to trigger concerns about introversion and online addiction among youngsters, Guangzhou Daily reports.

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