MySurvey - I use this myself

MySurvey is a group of consumers from throughout the United States who influence future products and services by volunteering to participate in consumer research. By sharing your opinions about products and services, you are rewarded with Reward Points to redeem for cash and merchandise.

I have made real life paypal cash from this site. They offer lots of $3-$5 surveys and they tell you how much you will get per survey! Sign up HERE