You can get R100 off at Takealot.com by using the following voucher code:
The code can only be used via the Takealot App (iOS & Android), and on orders over R300.
Expires the 20/09/2015.
Update: This voucher has now been disabled. People were creating multiple accounts and abusing the voucher. For future reference please read the Takealot Promo Codes T&Cs.