Facebook popular across SA's gender divide
Equal number of men and women in South Africa use social network Facebook.
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LinkedIn usage grows 40% in South Africa
Research firms World Wide Worx and Fuseware say there are now 3.8 million SA users.
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South Africans turn to Twitter, YouTube for Mandela updates
Thousands have tweeted and viewed live online video streams of events, says Fuseware.
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2go overtakes Mxit in Africa - study
Mobile social network from Cape Town grows up to surpass an instant messaging giant.