A Privacy Paradox: Social Networking in the United States by Susan B. Barnes in First Monday -- "Teenagers will freely give up personal information to join social networks on the Internet. Afterwards, they are surprised when their parents read their journals. Communities are outraged by the personal information posted by young people online and colleges keep track of student activities on and off campus."
The linked article discusses privacy issues in social networks and examines solutions to these issues. What do you think? Is privacy a outdated concept? Should it be?