Quite a lot of activity in SA:

Exchanges: 
https://www.luno.com/
https://ice3x.co.za/
https://localbitcoins.com/instant-bitcoins/?action=buy&country_code=ZA&amount=¤cy=ZAR&place_country=ZA&online_provider=ALL_ONLINE&find-offers=Search

Payment processing:
https://www.payfast.co.za/bitcoin/

Reddit:
https://www.reddit.com/r/BitcoinSouthAfrica/

Learning / Conference
http://blockchainacademy.co.za/
http://blockchainafrica.co/

And plenty more.