Not sure if this has been posted before either way nice to inform people who don't know.
Priceminister offer £5 off (no minimum spend) when you refer a friend.
That person will receive £5 off their first order and when they use that £5 you also get £5 off! So you can easily make multiple accounts using different address and cards to get multiple £5's off! There is some great stuff on the website, especially DVDs even for the full price! I've bought 5 dvds for 80p using this.
* MOD EDIT : ** Please DO NOT offer / request referrals **