Hackers and hippies: The origins of social networking

This is the terminal that was placed at Leopold's Records in Berkeley, CA in 1973 by Community Memory. Passers-by were invited to type a message. The machine is shown here under wraps at the Silicon Valley Computer History Museum.

"In a side streeet in Berkeley, California, the epicenter of counterculture in the 1960s and 1970s, I found would could well be the birthplace," of social networking, reports Rory Cellan-Jones in BBC News. Read more.