Sign up here at Swagbucks (one account per household). No credit card required.
Every time you search the internet, just start with the Swagbucks toolbar or from their homepage.
After a few searches you will be awarded swagbucks (sometimes 5, most of the time more!)
As soon as you reach 450 swagbucks, you can redeem them for a $5 Amazon Gift Card.
Get your friends to sign up and you will get matching swagbucks everytime they earn!
Want more information? Read here for more details.