Viewpoints is a website that has user reviews on just about anything you can think of. They occationally reward you for writing reviews. Right now, if you write 5 qualifying reviews before March 21st, they will send you a code for a $5 gift certificate to Amazon.com! Check it out here.
You will have to set up an account and then write 5 reviews of at least 700 characters (not words) in any of the following categories: home & garden, family & pets (excluding toys), health & beauty, kitchen (excluding food & drink), or computers & electronics. Just an FYI: You will not get a confirmation that you have completed the 5 reviews, you just have to wait about 2-3 weeks and they will e-mail you the certificate code. I have already earned 2 rewards, one for $11 and one for $10!