Profile: Mark Zuckerberg
Morland Sanders profiles Facebook chief executive Mark Zuckerberg.
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Jessie's father is adamant that she should not volunteer to be a Sleeping Beauty.
Rory Cellan-Jones traces the roots of social networking from the counterculture of the 70s, through early bulletin boards and the first networks on the World Wide Web
3/3 Rory Cellan-Jones asks where social networking will go in the future.
Tue 31 May 2011 16:00 BBC Radio 4
See all previous episodes from The Secret History of Social Networking
Morland Sanders profiles Facebook chief executive Mark Zuckerberg.
Edward Stourton profiles the leading social media blogger Pete Cashmore.
Rory Cellan-Jones profiles Moshi Monsters founder Michael Acton Smith.
Read Rory's thoughts about how technology is changing our lives on his BBC blog.
Follow BBC technology correspondent Rory Cellan-Jones on Twitter.
It's a phenomenon which seems to have come from nowhere, but in fact computer-based social networks...
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