Twitter and Facebook 'harming children's development'

http://www.telegraph.co.uk/education/educationnews/9620117/Twitter-and-Facebook-harming-childrens-development.html

 Article discussing the harmful effect on children's development due to online social networking.  I think that these harmful effects are partially the fault of the parents.  They can keep their child from spending 30+ hours a week using video games and computers. If the parents teach the children to use these things in moderation, then perhaps these problems wouldn't be as serious as they seem to be.