I am member of a cashback site called Free Coin.
I noticed on their blog that they are running a competition for people who sign up and complete at least one offer (an offer can be just clicking a daily click).
At the end of next month a winner will be picked to win a £15 iTunes voucher.
The link is: Free Coin - A UK Cashback Rewards Website
I can't enter because I'm already a member, so if you win feel free to let me have the prize.