Organizers stress the co-op is open to all shoppers - not just members.

VOA: standard.2010.07.28

Hansler says aka-aki is open to co-operation with other social networks, but currently most networks are too intent on keeping hold of their own users.

CNN: Face to Facebook: social networks hit the streets

Meanwhile, Swede Henrik Stenson leads at halfway in the South African Open, a co-sanctioned Sunshine and European Tour event, after a 65 for 13-under 131.

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Schwartzel, the Joburg champion in 2010 and 2011, is looking for his third successive title after December victories at the Asian Tour's Thailand Open and the co-sanctioned Alfred Dunhill Championship held in Malalane near Kruger National Park.

CNN: Fisher fighting nerves at Joburg Open