I'm pretty sure there's no problem with posting a link to another similar forum, it's not commercial or anything. You can get to most of the local Johannesburg kite chat on
xsport.co.za/ . But since someone called Tony posted there for the first time yesterday who I can only assume is you then it seems you've already found it.
Anyway looks like a few of us will head to the Vaal dam on Saturday morning, there's a chance of some kiteable wind.