The head of the Catholic Church in England and Wales, Archbishop Vincent Nichols, has warned against children using social networking sites because he says they make teenagers view friendship as a "commodity".

He said that the Internet and mobile phones were "dehumanising" community life, and said that humans are losing the ability to detect mood and read body language, due to a decrease in the number of face-to-face conversations that people experience.

"I think there's a worry that an excessive use or an almost exclusive use of text and emails means that as a society we're losing some of the ability to build interpersonal communication that's necessary for living together and building a community", said the Archbishop.

"Among young people often a key factor in them committing suicide is the trauma of transient relationships. They throw themselves into a friendship or network of friendships, then it collapses and they're desolate".

Is the Archbishop right, or is he barking up the wrong tree? Share your opinion in the comments.