"The virtual revolution -- How 20 years of the web has reshaped our lives" --- this is a BBC production, to watch here http://www.bbc.co.uk/virtualrevolution/makingofprog4.shtml or here http://urplay.se/159619
Does the Web really change how we think?
There are a lot of different stories to what extent SecondLife or Social Networking sites affect people. Here is one example
ContactDr. Isa Jahnke
University of Missouri
School of Information Science and Learning Technologies (SISLT, iSchool)
Director of Research for the IELab