Book Depository is offering 10% off all books again! All you need to do is 'Refer a Friend' and both you and your friend will get a 10% off voucher. I sent the referral to my alternate email addresses and the code seems to apply fine to my account which has a different email address - it doesn't seem to be linked to the recipient's email address.
Note it takes a while for the code to arrive. I requested mine around 11 am yesterday and didn't receive the voucher until 3 am this morning.
Edit: Just to clarify, Book Depository has standard free shipping to Australia. No code required.
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Full terms and conditions:
You will receive one 10% voucher for referring friends and then additional vouchers for those who buy, only one voucher can be received for introductions in the first instance.
Once a referred friend has bought from us we will send you a 10% voucher that can be used against your next purchase on bookdepository.co.uk or bookdepository.com. Simply follow the instructions on the email and click on the link in the email, the page it takes you to will have your discount code on it. If you don't go via this route, you will not see a redemption box in the basket.
Only one voucher may be redeemed per purchase, per person.
Offer expires Wednesday 26th February 2014 and all vouchers will expire noon GMT on this day.
Vouchers are non transferable and cannot be exchanged for cash.
Customers can refer as many friends as they like during the period, we will however monitor for unusually high use.
Vouchers cannot be retrospectively applied.
The Book Depository Limited retains the right to end this promotion without notice.
Email addresses will not be retained other than for the processing of the offer.
Garhg I ordered a book from there about half an hour ago. >:(