I don't know whether anybody listened to the latest edition of Analysis last night but I found it to be of interest. The programme looked at social networking, particularly the rise of Facebook and Myspace. It probably didn't uncover any new ground but did manage to sum up the current state of play fairly well I thought.
You can download the programme as a podcast or use the BBC's "Listen again" facility. All relevant links are on this webpage as is a transcript of the programme which might prove useful: http://news.bbc.co.uk/1/hi/programmes/analysis/7081638.stm