This is another app you basically get paid for having on your phone.
Get free gift cards from Mobile Performance Meter. Download the app and sign up. It is currently only available for android users.
You earn points for having the app on your phone, short surveys, and referring friends. Just for joining you get 100 points which is enough for a free $1 Amazon gift card.
Each friend you refer you get 200 points which is $2.
There are 71 store gift cards you can choose from.