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

WSJ: New York City Gifted-and-Talented Program's Math Is Questioned

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.

BBC: China media: Housing law anger