Very simple. All you do is tell everyone you know, like friends and family, about ooomph and give them your member number.

When your friends and family join ooomph they simply enter your member number.

At the end of each month we calculate the spend of all your friends and family who entered your member number. For every dollar they spend you get a discount (currently a special 2%) off your order.

And as an equation:

Only that
1. you have 3 months to use your ooomph4free discount from the date it is applied to your account.
2. the ooomph4free discount cannot be exchanged for cash
3. the discount is deducted from the net total value owing for your order.
4. you can only get a discount to the total value of your order. Any discount over this amount will be rolled over.