Feature points is an app, which I recommend, where you download apps in return for points. These points can then be traded for gift cards for iTunes, Amazon or even payments to your PayPal account. The best thing is, after you've downloaded the app, you can delete it and still redeem points. A popular tumblr blog, perks-of-being-chinese , has an FAQ page if there are any questions.
To download the app use this link: http://featu.re/O7ZBML or type in this code - O7ZBML - to get 50 free points instantly when you start! Hope you like it!